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/fieldpath/doc.go

@@ -0,0 +1,19 @@
+/*
+Copyright 2015 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 fieldpath supplies methods for extracting fields from objects
+// given a path to a field.
+package fieldpath // import "k8s.io/kubernetes/pkg/fieldpath"

e2e/vendor/k8s.io/kubernetes/pkg/fieldpath/fieldpath.go

@@ -0,0 +1,120 @@
+/*
+Copyright 2015 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 fieldpath
+
+import (
+	"fmt"
+	"sort"
+	"strconv"
+	"strings"
+
+	"k8s.io/apimachinery/pkg/api/meta"
+	"k8s.io/apimachinery/pkg/util/validation"
+)
+
+// FormatMap formats map[string]string to a string.
+func FormatMap(m map[string]string) (fmtStr string) {
+	// output with keys in sorted order to provide stable output
+	keys := make([]string, 0, len(m))
+	var grow int
+	for k, v := range m {
+		keys = append(keys, k)
+		// why add 4: (for =, \n, " and ")
+		grow += len(k) + len(v) + 4
+	}
+	sort.Strings(keys)
+	// allocate space to avoid expansion
+	dst := make([]byte, 0, grow)
+	for _, key := range keys {
+		if len(dst) > 0 {
+			dst = append(dst, '\n')
+		}
+		dst = append(dst, key...)
+		dst = append(dst, '=')
+		dst = strconv.AppendQuote(dst, m[key])
+	}
+	return string(dst)
+}
+
+// ExtractFieldPathAsString extracts the field from the given object
+// and returns it as a string.  The object must be a pointer to an
+// API type.
+func ExtractFieldPathAsString(obj interface{}, fieldPath string) (string, error) {
+	accessor, err := meta.Accessor(obj)
+	if err != nil {
+		return "", err
+	}
+
+	if path, subscript, ok := SplitMaybeSubscriptedPath(fieldPath); ok {
+		switch path {
+		case "metadata.annotations":
+			if errs := validation.IsQualifiedName(strings.ToLower(subscript)); len(errs) != 0 {
+				return "", fmt.Errorf("invalid key subscript in %s: %s", fieldPath, strings.Join(errs, ";"))
+			}
+			return accessor.GetAnnotations()[subscript], nil
+		case "metadata.labels":
+			if errs := validation.IsQualifiedName(subscript); len(errs) != 0 {
+				return "", fmt.Errorf("invalid key subscript in %s: %s", fieldPath, strings.Join(errs, ";"))
+			}
+			return accessor.GetLabels()[subscript], nil
+		default:
+			return "", fmt.Errorf("fieldPath %q does not support subscript", fieldPath)
+		}
+	}
+
+	switch fieldPath {
+	case "metadata.annotations":
+		return FormatMap(accessor.GetAnnotations()), nil
+	case "metadata.labels":
+		return FormatMap(accessor.GetLabels()), nil
+	case "metadata.name":
+		return accessor.GetName(), nil
+	case "metadata.namespace":
+		return accessor.GetNamespace(), nil
+	case "metadata.uid":
+		return string(accessor.GetUID()), nil
+	}
+
+	return "", fmt.Errorf("unsupported fieldPath: %v", fieldPath)
+}
+
+// SplitMaybeSubscriptedPath checks whether the specified fieldPath is
+// subscripted, and
+//   - if yes, this function splits the fieldPath into path and subscript, and
+//     returns (path, subscript, true).
+//   - if no, this function returns (fieldPath, "", false).
+//
+// Example inputs and outputs:
+//
+//	"metadata.annotations['myKey']" --> ("metadata.annotations", "myKey", true)
+//	"metadata.annotations['a[b]c']" --> ("metadata.annotations", "a[b]c", true)
+//	"metadata.labels['']"           --> ("metadata.labels", "", true)
+//	"metadata.labels"               --> ("metadata.labels", "", false)
+func SplitMaybeSubscriptedPath(fieldPath string) (string, string, bool) {
+	if !strings.HasSuffix(fieldPath, "']") {
+		return fieldPath, "", false
+	}
+	s := strings.TrimSuffix(fieldPath, "']")
+	parts := strings.SplitN(s, "['", 2)
+	if len(parts) < 2 {
+		return fieldPath, "", false
+	}
+	if len(parts[0]) == 0 {
+		return fieldPath, "", false
+	}
+	return parts[0], parts[1], true
+}