build: move e2e dependencies into e2e/go.mod

Several packages are only used while running the e2e suite. These
packages are less important to update, as the they can not influence the
final executable that is part of the Ceph-CSI container-image.

By moving these dependencies out of the main Ceph-CSI go.mod, it is
easier to identify if a reported CVE affects Ceph-CSI, or only the
testing (like most of the Kubernetes CVEs).

Signed-off-by: Niels de Vos <ndevos@ibm.com>

e2e/vendor/k8s.io/client-go/informers/autoscaling/interface.go

@@ -0,0 +1,70 @@
+/*
+Copyright The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Code generated by informer-gen. DO NOT EDIT.
+
+package autoscaling
+
+import (
+	v1 "k8s.io/client-go/informers/autoscaling/v1"
+	v2 "k8s.io/client-go/informers/autoscaling/v2"
+	v2beta1 "k8s.io/client-go/informers/autoscaling/v2beta1"
+	v2beta2 "k8s.io/client-go/informers/autoscaling/v2beta2"
+	internalinterfaces "k8s.io/client-go/informers/internalinterfaces"
+)
+
+// Interface provides access to each of this group's versions.
+type Interface interface {
+	// V1 provides access to shared informers for resources in V1.
+	V1() v1.Interface
+	// V2 provides access to shared informers for resources in V2.
+	V2() v2.Interface
+	// V2beta1 provides access to shared informers for resources in V2beta1.
+	V2beta1() v2beta1.Interface
+	// V2beta2 provides access to shared informers for resources in V2beta2.
+	V2beta2() v2beta2.Interface
+}
+
+type group struct {
+	factory          internalinterfaces.SharedInformerFactory
+	namespace        string
+	tweakListOptions internalinterfaces.TweakListOptionsFunc
+}
+
+// New returns a new Interface.
+func New(f internalinterfaces.SharedInformerFactory, namespace string, tweakListOptions internalinterfaces.TweakListOptionsFunc) Interface {
+	return &group{factory: f, namespace: namespace, tweakListOptions: tweakListOptions}
+}
+
+// V1 returns a new v1.Interface.
+func (g *group) V1() v1.Interface {
+	return v1.New(g.factory, g.namespace, g.tweakListOptions)
+}
+
+// V2 returns a new v2.Interface.
+func (g *group) V2() v2.Interface {
+	return v2.New(g.factory, g.namespace, g.tweakListOptions)
+}
+
+// V2beta1 returns a new v2beta1.Interface.
+func (g *group) V2beta1() v2beta1.Interface {
+	return v2beta1.New(g.factory, g.namespace, g.tweakListOptions)
+}
+
+// V2beta2 returns a new v2beta2.Interface.
+func (g *group) V2beta2() v2beta2.Interface {
+	return v2beta2.New(g.factory, g.namespace, g.tweakListOptions)
+}

e2e/vendor/k8s.io/client-go/informers/autoscaling/v1/horizontalpodautoscaler.go

@@ -0,0 +1,90 @@
+/*
+Copyright The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Code generated by informer-gen. DO NOT EDIT.
+
+package v1
+
+import (
+	context "context"
+	time "time"
+
+	apiautoscalingv1 "k8s.io/api/autoscaling/v1"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	runtime "k8s.io/apimachinery/pkg/runtime"
+	watch "k8s.io/apimachinery/pkg/watch"
+	internalinterfaces "k8s.io/client-go/informers/internalinterfaces"
+	kubernetes "k8s.io/client-go/kubernetes"
+	autoscalingv1 "k8s.io/client-go/listers/autoscaling/v1"
+	cache "k8s.io/client-go/tools/cache"
+)
+
+// HorizontalPodAutoscalerInformer provides access to a shared informer and lister for
+// HorizontalPodAutoscalers.
+type HorizontalPodAutoscalerInformer interface {
+	Informer() cache.SharedIndexInformer
+	Lister() autoscalingv1.HorizontalPodAutoscalerLister
+}
+
+type horizontalPodAutoscalerInformer struct {
+	factory          internalinterfaces.SharedInformerFactory
+	tweakListOptions internalinterfaces.TweakListOptionsFunc
+	namespace        string
+}
+
+// NewHorizontalPodAutoscalerInformer constructs a new informer for HorizontalPodAutoscaler type.
+// Always prefer using an informer factory to get a shared informer instead of getting an independent
+// one. This reduces memory footprint and number of connections to the server.
+func NewHorizontalPodAutoscalerInformer(client kubernetes.Interface, namespace string, resyncPeriod time.Duration, indexers cache.Indexers) cache.SharedIndexInformer {
+	return NewFilteredHorizontalPodAutoscalerInformer(client, namespace, resyncPeriod, indexers, nil)
+}
+
+// NewFilteredHorizontalPodAutoscalerInformer constructs a new informer for HorizontalPodAutoscaler type.
+// Always prefer using an informer factory to get a shared informer instead of getting an independent
+// one. This reduces memory footprint and number of connections to the server.
+func NewFilteredHorizontalPodAutoscalerInformer(client kubernetes.Interface, namespace string, resyncPeriod time.Duration, indexers cache.Indexers, tweakListOptions internalinterfaces.TweakListOptionsFunc) cache.SharedIndexInformer {
+	return cache.NewSharedIndexInformer(
+		&cache.ListWatch{
+			ListFunc: func(options metav1.ListOptions) (runtime.Object, error) {
+				if tweakListOptions != nil {
+					tweakListOptions(&options)
+				}
+				return client.AutoscalingV1().HorizontalPodAutoscalers(namespace).List(context.TODO(), options)
+			},
+			WatchFunc: func(options metav1.ListOptions) (watch.Interface, error) {
+				if tweakListOptions != nil {
+					tweakListOptions(&options)
+				}
+				return client.AutoscalingV1().HorizontalPodAutoscalers(namespace).Watch(context.TODO(), options)
+			},
+		},
+		&apiautoscalingv1.HorizontalPodAutoscaler{},
+		resyncPeriod,
+		indexers,
+	)
+}
+
+func (f *horizontalPodAutoscalerInformer) defaultInformer(client kubernetes.Interface, resyncPeriod time.Duration) cache.SharedIndexInformer {
+	return NewFilteredHorizontalPodAutoscalerInformer(client, f.namespace, resyncPeriod, cache.Indexers{cache.NamespaceIndex: cache.MetaNamespaceIndexFunc}, f.tweakListOptions)
+}
+
+func (f *horizontalPodAutoscalerInformer) Informer() cache.SharedIndexInformer {
+	return f.factory.InformerFor(&apiautoscalingv1.HorizontalPodAutoscaler{}, f.defaultInformer)
+}
+
+func (f *horizontalPodAutoscalerInformer) Lister() autoscalingv1.HorizontalPodAutoscalerLister {
+	return autoscalingv1.NewHorizontalPodAutoscalerLister(f.Informer().GetIndexer())
+}

e2e/vendor/k8s.io/client-go/informers/autoscaling/v1/interface.go

@@ -0,0 +1,45 @@
+/*
+Copyright The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Code generated by informer-gen. DO NOT EDIT.
+
+package v1
+
+import (
+	internalinterfaces "k8s.io/client-go/informers/internalinterfaces"
+)
+
+// Interface provides access to all the informers in this group version.
+type Interface interface {
+	// HorizontalPodAutoscalers returns a HorizontalPodAutoscalerInformer.
+	HorizontalPodAutoscalers() HorizontalPodAutoscalerInformer
+}
+
+type version struct {
+	factory          internalinterfaces.SharedInformerFactory
+	namespace        string
+	tweakListOptions internalinterfaces.TweakListOptionsFunc
+}
+
+// New returns a new Interface.
+func New(f internalinterfaces.SharedInformerFactory, namespace string, tweakListOptions internalinterfaces.TweakListOptionsFunc) Interface {
+	return &version{factory: f, namespace: namespace, tweakListOptions: tweakListOptions}
+}
+
+// HorizontalPodAutoscalers returns a HorizontalPodAutoscalerInformer.
+func (v *version) HorizontalPodAutoscalers() HorizontalPodAutoscalerInformer {
+	return &horizontalPodAutoscalerInformer{factory: v.factory, namespace: v.namespace, tweakListOptions: v.tweakListOptions}
+}

e2e/vendor/k8s.io/client-go/informers/autoscaling/v2/horizontalpodautoscaler.go

@@ -0,0 +1,90 @@
+/*
+Copyright The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Code generated by informer-gen. DO NOT EDIT.
+
+package v2
+
+import (
+	context "context"
+	time "time"
+
+	apiautoscalingv2 "k8s.io/api/autoscaling/v2"
+	v1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	runtime "k8s.io/apimachinery/pkg/runtime"
+	watch "k8s.io/apimachinery/pkg/watch"
+	internalinterfaces "k8s.io/client-go/informers/internalinterfaces"
+	kubernetes "k8s.io/client-go/kubernetes"
+	autoscalingv2 "k8s.io/client-go/listers/autoscaling/v2"
+	cache "k8s.io/client-go/tools/cache"
+)
+
+// HorizontalPodAutoscalerInformer provides access to a shared informer and lister for
+// HorizontalPodAutoscalers.
+type HorizontalPodAutoscalerInformer interface {
+	Informer() cache.SharedIndexInformer
+	Lister() autoscalingv2.HorizontalPodAutoscalerLister
+}
+
+type horizontalPodAutoscalerInformer struct {
+	factory          internalinterfaces.SharedInformerFactory
+	tweakListOptions internalinterfaces.TweakListOptionsFunc
+	namespace        string
+}
+
+// NewHorizontalPodAutoscalerInformer constructs a new informer for HorizontalPodAutoscaler type.
+// Always prefer using an informer factory to get a shared informer instead of getting an independent
+// one. This reduces memory footprint and number of connections to the server.
+func NewHorizontalPodAutoscalerInformer(client kubernetes.Interface, namespace string, resyncPeriod time.Duration, indexers cache.Indexers) cache.SharedIndexInformer {
+	return NewFilteredHorizontalPodAutoscalerInformer(client, namespace, resyncPeriod, indexers, nil)
+}
+
+// NewFilteredHorizontalPodAutoscalerInformer constructs a new informer for HorizontalPodAutoscaler type.
+// Always prefer using an informer factory to get a shared informer instead of getting an independent
+// one. This reduces memory footprint and number of connections to the server.
+func NewFilteredHorizontalPodAutoscalerInformer(client kubernetes.Interface, namespace string, resyncPeriod time.Duration, indexers cache.Indexers, tweakListOptions internalinterfaces.TweakListOptionsFunc) cache.SharedIndexInformer {
+	return cache.NewSharedIndexInformer(
+		&cache.ListWatch{
+			ListFunc: func(options v1.ListOptions) (runtime.Object, error) {
+				if tweakListOptions != nil {
+					tweakListOptions(&options)
+				}
+				return client.AutoscalingV2().HorizontalPodAutoscalers(namespace).List(context.TODO(), options)
+			},
+			WatchFunc: func(options v1.ListOptions) (watch.Interface, error) {
+				if tweakListOptions != nil {
+					tweakListOptions(&options)
+				}
+				return client.AutoscalingV2().HorizontalPodAutoscalers(namespace).Watch(context.TODO(), options)
+			},
+		},
+		&apiautoscalingv2.HorizontalPodAutoscaler{},
+		resyncPeriod,
+		indexers,
+	)
+}
+
+func (f *horizontalPodAutoscalerInformer) defaultInformer(client kubernetes.Interface, resyncPeriod time.Duration) cache.SharedIndexInformer {
+	return NewFilteredHorizontalPodAutoscalerInformer(client, f.namespace, resyncPeriod, cache.Indexers{cache.NamespaceIndex: cache.MetaNamespaceIndexFunc}, f.tweakListOptions)
+}
+
+func (f *horizontalPodAutoscalerInformer) Informer() cache.SharedIndexInformer {
+	return f.factory.InformerFor(&apiautoscalingv2.HorizontalPodAutoscaler{}, f.defaultInformer)
+}
+
+func (f *horizontalPodAutoscalerInformer) Lister() autoscalingv2.HorizontalPodAutoscalerLister {
+	return autoscalingv2.NewHorizontalPodAutoscalerLister(f.Informer().GetIndexer())
+}

e2e/vendor/k8s.io/client-go/informers/autoscaling/v2/interface.go

@@ -0,0 +1,45 @@
+/*
+Copyright The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Code generated by informer-gen. DO NOT EDIT.
+
+package v2
+
+import (
+	internalinterfaces "k8s.io/client-go/informers/internalinterfaces"
+)
+
+// Interface provides access to all the informers in this group version.
+type Interface interface {
+	// HorizontalPodAutoscalers returns a HorizontalPodAutoscalerInformer.
+	HorizontalPodAutoscalers() HorizontalPodAutoscalerInformer
+}
+
+type version struct {
+	factory          internalinterfaces.SharedInformerFactory
+	namespace        string
+	tweakListOptions internalinterfaces.TweakListOptionsFunc
+}
+
+// New returns a new Interface.
+func New(f internalinterfaces.SharedInformerFactory, namespace string, tweakListOptions internalinterfaces.TweakListOptionsFunc) Interface {
+	return &version{factory: f, namespace: namespace, tweakListOptions: tweakListOptions}
+}
+
+// HorizontalPodAutoscalers returns a HorizontalPodAutoscalerInformer.
+func (v *version) HorizontalPodAutoscalers() HorizontalPodAutoscalerInformer {
+	return &horizontalPodAutoscalerInformer{factory: v.factory, namespace: v.namespace, tweakListOptions: v.tweakListOptions}
+}

e2e/vendor/k8s.io/client-go/informers/autoscaling/v2beta1/horizontalpodautoscaler.go

@@ -0,0 +1,90 @@
+/*
+Copyright The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Code generated by informer-gen. DO NOT EDIT.
+
+package v2beta1
+
+import (
+	context "context"
+	time "time"
+
+	apiautoscalingv2beta1 "k8s.io/api/autoscaling/v2beta1"
+	v1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	runtime "k8s.io/apimachinery/pkg/runtime"
+	watch "k8s.io/apimachinery/pkg/watch"
+	internalinterfaces "k8s.io/client-go/informers/internalinterfaces"
+	kubernetes "k8s.io/client-go/kubernetes"
+	autoscalingv2beta1 "k8s.io/client-go/listers/autoscaling/v2beta1"
+	cache "k8s.io/client-go/tools/cache"
+)
+
+// HorizontalPodAutoscalerInformer provides access to a shared informer and lister for
+// HorizontalPodAutoscalers.
+type HorizontalPodAutoscalerInformer interface {
+	Informer() cache.SharedIndexInformer
+	Lister() autoscalingv2beta1.HorizontalPodAutoscalerLister
+}
+
+type horizontalPodAutoscalerInformer struct {
+	factory          internalinterfaces.SharedInformerFactory
+	tweakListOptions internalinterfaces.TweakListOptionsFunc
+	namespace        string
+}
+
+// NewHorizontalPodAutoscalerInformer constructs a new informer for HorizontalPodAutoscaler type.
+// Always prefer using an informer factory to get a shared informer instead of getting an independent
+// one. This reduces memory footprint and number of connections to the server.
+func NewHorizontalPodAutoscalerInformer(client kubernetes.Interface, namespace string, resyncPeriod time.Duration, indexers cache.Indexers) cache.SharedIndexInformer {
+	return NewFilteredHorizontalPodAutoscalerInformer(client, namespace, resyncPeriod, indexers, nil)
+}
+
+// NewFilteredHorizontalPodAutoscalerInformer constructs a new informer for HorizontalPodAutoscaler type.
+// Always prefer using an informer factory to get a shared informer instead of getting an independent
+// one. This reduces memory footprint and number of connections to the server.
+func NewFilteredHorizontalPodAutoscalerInformer(client kubernetes.Interface, namespace string, resyncPeriod time.Duration, indexers cache.Indexers, tweakListOptions internalinterfaces.TweakListOptionsFunc) cache.SharedIndexInformer {
+	return cache.NewSharedIndexInformer(
+		&cache.ListWatch{
+			ListFunc: func(options v1.ListOptions) (runtime.Object, error) {
+				if tweakListOptions != nil {
+					tweakListOptions(&options)
+				}
+				return client.AutoscalingV2beta1().HorizontalPodAutoscalers(namespace).List(context.TODO(), options)
+			},
+			WatchFunc: func(options v1.ListOptions) (watch.Interface, error) {
+				if tweakListOptions != nil {
+					tweakListOptions(&options)
+				}
+				return client.AutoscalingV2beta1().HorizontalPodAutoscalers(namespace).Watch(context.TODO(), options)
+			},
+		},
+		&apiautoscalingv2beta1.HorizontalPodAutoscaler{},
+		resyncPeriod,
+		indexers,
+	)
+}
+
+func (f *horizontalPodAutoscalerInformer) defaultInformer(client kubernetes.Interface, resyncPeriod time.Duration) cache.SharedIndexInformer {
+	return NewFilteredHorizontalPodAutoscalerInformer(client, f.namespace, resyncPeriod, cache.Indexers{cache.NamespaceIndex: cache.MetaNamespaceIndexFunc}, f.tweakListOptions)
+}
+
+func (f *horizontalPodAutoscalerInformer) Informer() cache.SharedIndexInformer {
+	return f.factory.InformerFor(&apiautoscalingv2beta1.HorizontalPodAutoscaler{}, f.defaultInformer)
+}
+
+func (f *horizontalPodAutoscalerInformer) Lister() autoscalingv2beta1.HorizontalPodAutoscalerLister {
+	return autoscalingv2beta1.NewHorizontalPodAutoscalerLister(f.Informer().GetIndexer())
+}

e2e/vendor/k8s.io/client-go/informers/autoscaling/v2beta1/interface.go

@@ -0,0 +1,45 @@
+/*
+Copyright The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Code generated by informer-gen. DO NOT EDIT.
+
+package v2beta1
+
+import (
+	internalinterfaces "k8s.io/client-go/informers/internalinterfaces"
+)
+
+// Interface provides access to all the informers in this group version.
+type Interface interface {
+	// HorizontalPodAutoscalers returns a HorizontalPodAutoscalerInformer.
+	HorizontalPodAutoscalers() HorizontalPodAutoscalerInformer
+}
+
+type version struct {
+	factory          internalinterfaces.SharedInformerFactory
+	namespace        string
+	tweakListOptions internalinterfaces.TweakListOptionsFunc
+}
+
+// New returns a new Interface.
+func New(f internalinterfaces.SharedInformerFactory, namespace string, tweakListOptions internalinterfaces.TweakListOptionsFunc) Interface {
+	return &version{factory: f, namespace: namespace, tweakListOptions: tweakListOptions}
+}
+
+// HorizontalPodAutoscalers returns a HorizontalPodAutoscalerInformer.
+func (v *version) HorizontalPodAutoscalers() HorizontalPodAutoscalerInformer {
+	return &horizontalPodAutoscalerInformer{factory: v.factory, namespace: v.namespace, tweakListOptions: v.tweakListOptions}
+}

e2e/vendor/k8s.io/client-go/informers/autoscaling/v2beta2/horizontalpodautoscaler.go

@@ -0,0 +1,90 @@
+/*
+Copyright The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Code generated by informer-gen. DO NOT EDIT.
+
+package v2beta2
+
+import (
+	context "context"
+	time "time"
+
+	apiautoscalingv2beta2 "k8s.io/api/autoscaling/v2beta2"
+	v1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	runtime "k8s.io/apimachinery/pkg/runtime"
+	watch "k8s.io/apimachinery/pkg/watch"
+	internalinterfaces "k8s.io/client-go/informers/internalinterfaces"
+	kubernetes "k8s.io/client-go/kubernetes"
+	autoscalingv2beta2 "k8s.io/client-go/listers/autoscaling/v2beta2"
+	cache "k8s.io/client-go/tools/cache"
+)
+
+// HorizontalPodAutoscalerInformer provides access to a shared informer and lister for
+// HorizontalPodAutoscalers.
+type HorizontalPodAutoscalerInformer interface {
+	Informer() cache.SharedIndexInformer
+	Lister() autoscalingv2beta2.HorizontalPodAutoscalerLister
+}
+
+type horizontalPodAutoscalerInformer struct {
+	factory          internalinterfaces.SharedInformerFactory
+	tweakListOptions internalinterfaces.TweakListOptionsFunc
+	namespace        string
+}
+
+// NewHorizontalPodAutoscalerInformer constructs a new informer for HorizontalPodAutoscaler type.
+// Always prefer using an informer factory to get a shared informer instead of getting an independent
+// one. This reduces memory footprint and number of connections to the server.
+func NewHorizontalPodAutoscalerInformer(client kubernetes.Interface, namespace string, resyncPeriod time.Duration, indexers cache.Indexers) cache.SharedIndexInformer {
+	return NewFilteredHorizontalPodAutoscalerInformer(client, namespace, resyncPeriod, indexers, nil)
+}
+
+// NewFilteredHorizontalPodAutoscalerInformer constructs a new informer for HorizontalPodAutoscaler type.
+// Always prefer using an informer factory to get a shared informer instead of getting an independent
+// one. This reduces memory footprint and number of connections to the server.
+func NewFilteredHorizontalPodAutoscalerInformer(client kubernetes.Interface, namespace string, resyncPeriod time.Duration, indexers cache.Indexers, tweakListOptions internalinterfaces.TweakListOptionsFunc) cache.SharedIndexInformer {
+	return cache.NewSharedIndexInformer(
+		&cache.ListWatch{
+			ListFunc: func(options v1.ListOptions) (runtime.Object, error) {
+				if tweakListOptions != nil {
+					tweakListOptions(&options)
+				}
+				return client.AutoscalingV2beta2().HorizontalPodAutoscalers(namespace).List(context.TODO(), options)
+			},
+			WatchFunc: func(options v1.ListOptions) (watch.Interface, error) {
+				if tweakListOptions != nil {
+					tweakListOptions(&options)
+				}
+				return client.AutoscalingV2beta2().HorizontalPodAutoscalers(namespace).Watch(context.TODO(), options)
+			},
+		},
+		&apiautoscalingv2beta2.HorizontalPodAutoscaler{},
+		resyncPeriod,
+		indexers,
+	)
+}
+
+func (f *horizontalPodAutoscalerInformer) defaultInformer(client kubernetes.Interface, resyncPeriod time.Duration) cache.SharedIndexInformer {
+	return NewFilteredHorizontalPodAutoscalerInformer(client, f.namespace, resyncPeriod, cache.Indexers{cache.NamespaceIndex: cache.MetaNamespaceIndexFunc}, f.tweakListOptions)
+}
+
+func (f *horizontalPodAutoscalerInformer) Informer() cache.SharedIndexInformer {
+	return f.factory.InformerFor(&apiautoscalingv2beta2.HorizontalPodAutoscaler{}, f.defaultInformer)
+}
+
+func (f *horizontalPodAutoscalerInformer) Lister() autoscalingv2beta2.HorizontalPodAutoscalerLister {
+	return autoscalingv2beta2.NewHorizontalPodAutoscalerLister(f.Informer().GetIndexer())
+}

e2e/vendor/k8s.io/client-go/informers/autoscaling/v2beta2/interface.go

@@ -0,0 +1,45 @@
+/*
+Copyright The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Code generated by informer-gen. DO NOT EDIT.
+
+package v2beta2
+
+import (
+	internalinterfaces "k8s.io/client-go/informers/internalinterfaces"
+)
+
+// Interface provides access to all the informers in this group version.
+type Interface interface {
+	// HorizontalPodAutoscalers returns a HorizontalPodAutoscalerInformer.
+	HorizontalPodAutoscalers() HorizontalPodAutoscalerInformer
+}
+
+type version struct {
+	factory          internalinterfaces.SharedInformerFactory
+	namespace        string
+	tweakListOptions internalinterfaces.TweakListOptionsFunc
+}
+
+// New returns a new Interface.
+func New(f internalinterfaces.SharedInformerFactory, namespace string, tweakListOptions internalinterfaces.TweakListOptionsFunc) Interface {
+	return &version{factory: f, namespace: namespace, tweakListOptions: tweakListOptions}
+}
+
+// HorizontalPodAutoscalers returns a HorizontalPodAutoscalerInformer.
+func (v *version) HorizontalPodAutoscalers() HorizontalPodAutoscalerInformer {
+	return &horizontalPodAutoscalerInformer{factory: v.factory, namespace: v.namespace, tweakListOptions: v.tweakListOptions}
+}