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/kubernetes/pkg/util/pod/pod.go

@@ -0,0 +1,81 @@
+/*
+Copyright 2018 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 pod
+
+import (
+	"bytes"
+	"context"
+	"encoding/json"
+	"fmt"
+
+	v1 "k8s.io/api/core/v1"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/types"
+	"k8s.io/apimachinery/pkg/util/strategicpatch"
+	clientset "k8s.io/client-go/kubernetes"
+	podutil "k8s.io/kubernetes/pkg/api/v1/pod"
+)
+
+// PatchPodStatus patches pod status. It returns true and avoids an update if the patch contains no changes.
+func PatchPodStatus(ctx context.Context, c clientset.Interface, namespace, name string, uid types.UID, oldPodStatus, newPodStatus v1.PodStatus) (*v1.Pod, []byte, bool, error) {
+	patchBytes, unchanged, err := preparePatchBytesForPodStatus(namespace, name, uid, oldPodStatus, newPodStatus)
+	if err != nil {
+		return nil, nil, false, err
+	}
+	if unchanged {
+		return nil, patchBytes, true, nil
+	}
+
+	updatedPod, err := c.CoreV1().Pods(namespace).Patch(ctx, name, types.StrategicMergePatchType, patchBytes, metav1.PatchOptions{}, "status")
+	if err != nil {
+		return nil, nil, false, fmt.Errorf("failed to patch status %q for pod %q/%q: %v", patchBytes, namespace, name, err)
+	}
+	return updatedPod, patchBytes, false, nil
+}
+
+func preparePatchBytesForPodStatus(namespace, name string, uid types.UID, oldPodStatus, newPodStatus v1.PodStatus) ([]byte, bool, error) {
+	oldData, err := json.Marshal(v1.Pod{
+		Status: oldPodStatus,
+	})
+	if err != nil {
+		return nil, false, fmt.Errorf("failed to Marshal oldData for pod %q/%q: %v", namespace, name, err)
+	}
+
+	newData, err := json.Marshal(v1.Pod{
+		ObjectMeta: metav1.ObjectMeta{UID: uid}, // only put the uid in the new object to ensure it appears in the patch as a precondition
+		Status:     newPodStatus,
+	})
+	if err != nil {
+		return nil, false, fmt.Errorf("failed to Marshal newData for pod %q/%q: %v", namespace, name, err)
+	}
+
+	patchBytes, err := strategicpatch.CreateTwoWayMergePatch(oldData, newData, v1.Pod{})
+	if err != nil {
+		return nil, false, fmt.Errorf("failed to CreateTwoWayMergePatch for pod %q/%q: %v", namespace, name, err)
+	}
+	return patchBytes, bytes.Equal(patchBytes, []byte(fmt.Sprintf(`{"metadata":{"uid":%q}}`, uid))), nil
+}
+
+// ReplaceOrAppendPodCondition replaces the first pod condition with equal type or appends if there is none
+func ReplaceOrAppendPodCondition(conditions []v1.PodCondition, condition *v1.PodCondition) []v1.PodCondition {
+	if i, _ := podutil.GetPodConditionFromList(conditions, condition.Type); i >= 0 {
+		conditions[i] = *condition
+	} else {
+		conditions = append(conditions, *condition)
+	}
+	return conditions
+}