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/apimachinery/pkg/labels/doc.go

@@ -0,0 +1,19 @@
+/*
+Copyright 2014 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.
+*/
+
+// Package labels implements a simple label system, parsing and matching
+// selectors with sets of labels.
+package labels // import "k8s.io/apimachinery/pkg/labels"

e2e/vendor/k8s.io/apimachinery/pkg/labels/labels.go

@@ -0,0 +1,174 @@
+/*
+Copyright 2014 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.
+*/
+
+package labels
+
+import (
+	"fmt"
+	"sort"
+	"strings"
+
+	"k8s.io/apimachinery/pkg/util/validation/field"
+)
+
+// Labels allows you to present labels independently from their storage.
+type Labels interface {
+	// Has returns whether the provided label exists.
+	Has(label string) (exists bool)
+
+	// Get returns the value for the provided label.
+	Get(label string) (value string)
+}
+
+// Set is a map of label:value. It implements Labels.
+type Set map[string]string
+
+// String returns all labels listed as a human readable string.
+// Conveniently, exactly the format that ParseSelector takes.
+func (ls Set) String() string {
+	selector := make([]string, 0, len(ls))
+	for key, value := range ls {
+		selector = append(selector, key+"="+value)
+	}
+	// Sort for determinism.
+	sort.StringSlice(selector).Sort()
+	return strings.Join(selector, ",")
+}
+
+// Has returns whether the provided label exists in the map.
+func (ls Set) Has(label string) bool {
+	_, exists := ls[label]
+	return exists
+}
+
+// Get returns the value in the map for the provided label.
+func (ls Set) Get(label string) string {
+	return ls[label]
+}
+
+// AsSelector converts labels into a selectors. It does not
+// perform any validation, which means the server will reject
+// the request if the Set contains invalid values.
+func (ls Set) AsSelector() Selector {
+	return SelectorFromSet(ls)
+}
+
+// AsValidatedSelector converts labels into a selectors.
+// The Set is validated client-side, which allows to catch errors early.
+func (ls Set) AsValidatedSelector() (Selector, error) {
+	return ValidatedSelectorFromSet(ls)
+}
+
+// AsSelectorPreValidated converts labels into a selector, but
+// assumes that labels are already validated and thus doesn't
+// perform any validation.
+// According to our measurements this is significantly faster
+// in codepaths that matter at high scale.
+// Note: this method copies the Set; if the Set is immutable, consider wrapping it with ValidatedSetSelector
+// instead, which does not copy.
+func (ls Set) AsSelectorPreValidated() Selector {
+	return SelectorFromValidatedSet(ls)
+}
+
+// FormatLabels converts label map into plain string
+func FormatLabels(labelMap map[string]string) string {
+	l := Set(labelMap).String()
+	if l == "" {
+		l = "<none>"
+	}
+	return l
+}
+
+// Conflicts takes 2 maps and returns true if there a key match between
+// the maps but the value doesn't match, and returns false in other cases
+func Conflicts(labels1, labels2 Set) bool {
+	small := labels1
+	big := labels2
+	if len(labels2) < len(labels1) {
+		small = labels2
+		big = labels1
+	}
+
+	for k, v := range small {
+		if val, match := big[k]; match {
+			if val != v {
+				return true
+			}
+		}
+	}
+
+	return false
+}
+
+// Merge combines given maps, and does not check for any conflicts
+// between the maps. In case of conflicts, second map (labels2) wins
+func Merge(labels1, labels2 Set) Set {
+	mergedMap := Set{}
+
+	for k, v := range labels1 {
+		mergedMap[k] = v
+	}
+	for k, v := range labels2 {
+		mergedMap[k] = v
+	}
+	return mergedMap
+}
+
+// Equals returns true if the given maps are equal
+func Equals(labels1, labels2 Set) bool {
+	if len(labels1) != len(labels2) {
+		return false
+	}
+
+	for k, v := range labels1 {
+		value, ok := labels2[k]
+		if !ok {
+			return false
+		}
+		if value != v {
+			return false
+		}
+	}
+	return true
+}
+
+// ConvertSelectorToLabelsMap converts selector string to labels map
+// and validates keys and values
+func ConvertSelectorToLabelsMap(selector string, opts ...field.PathOption) (Set, error) {
+	labelsMap := Set{}
+
+	if len(selector) == 0 {
+		return labelsMap, nil
+	}
+
+	labels := strings.Split(selector, ",")
+	for _, label := range labels {
+		l := strings.Split(label, "=")
+		if len(l) != 2 {
+			return labelsMap, fmt.Errorf("invalid selector: %s", l)
+		}
+		key := strings.TrimSpace(l[0])
+		if err := validateLabelKey(key, field.ToPath(opts...)); err != nil {
+			return labelsMap, err
+		}
+		value := strings.TrimSpace(l[1])
+		if err := validateLabelValue(key, value, field.ToPath(opts...)); err != nil {
+			return labelsMap, err
+		}
+		labelsMap[key] = value
+	}
+	return labelsMap, nil
+}

e2e/vendor/k8s.io/apimachinery/pkg/labels/zz_generated.deepcopy.go

@@ -0,0 +1,43 @@
+//go:build !ignore_autogenerated
+// +build !ignore_autogenerated
+
+/*
+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 deepcopy-gen. DO NOT EDIT.
+
+package labels
+
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *Requirement) DeepCopyInto(out *Requirement) {
+	*out = *in
+	if in.strValues != nil {
+		in, out := &in.strValues, &out.strValues
+		*out = make([]string, len(*in))
+		copy(*out, *in)
+	}
+	return
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new Requirement.
+func (in *Requirement) DeepCopy() *Requirement {
+	if in == nil {
+		return nil
+	}
+	out := new(Requirement)
+	in.DeepCopyInto(out)
+	return out
+}