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/apiserver/pkg/endpoints/openapi/openapi.go

@@ -0,0 +1,191 @@
+/*
+Copyright 2016 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 openapi
+
+import (
+	"bytes"
+	"fmt"
+	"reflect"
+	"sort"
+	"strings"
+	"unicode"
+
+	restful "github.com/emicklei/go-restful/v3"
+
+	v1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/runtime"
+	"k8s.io/apimachinery/pkg/runtime/schema"
+	"k8s.io/kube-openapi/pkg/util"
+	"k8s.io/kube-openapi/pkg/validation/spec"
+)
+
+var verbs = util.NewTrie([]string{"get", "log", "read", "replace", "patch", "delete", "deletecollection", "watch", "connect", "proxy", "list", "create", "patch"})
+
+const (
+	extensionGVK = "x-kubernetes-group-version-kind"
+)
+
+// ToValidOperationID makes an string a valid op ID (e.g. removing punctuations and whitespaces and make it camel case)
+func ToValidOperationID(s string, capitalizeFirstLetter bool) string {
+	var buffer bytes.Buffer
+	capitalize := capitalizeFirstLetter
+	for i, r := range s {
+		if unicode.IsLetter(r) || r == '_' || (i != 0 && unicode.IsDigit(r)) {
+			if capitalize {
+				buffer.WriteRune(unicode.ToUpper(r))
+				capitalize = false
+			} else {
+				buffer.WriteRune(r)
+			}
+		} else {
+			capitalize = true
+		}
+	}
+	return buffer.String()
+}
+
+// GetOperationIDAndTags returns a customize operation ID and a list of tags for kubernetes API server's OpenAPI spec to prevent duplicate IDs.
+func GetOperationIDAndTags(r *restful.Route) (string, []string, error) {
+	op := r.Operation
+	path := r.Path
+	var tags []string
+	prefix, exists := verbs.GetPrefix(op)
+	if !exists {
+		return op, tags, fmt.Errorf("operation names should start with a verb. Cannot determine operation verb from %v", op)
+	}
+	op = op[len(prefix):]
+	parts := strings.Split(strings.Trim(path, "/"), "/")
+	// Assume /api is /apis/core, remove this when we actually server /api/... on /apis/core/...
+	if len(parts) >= 1 && parts[0] == "api" {
+		parts = append([]string{"apis", "core"}, parts[1:]...)
+	}
+	if len(parts) >= 2 && parts[0] == "apis" {
+		trimmed := strings.TrimSuffix(parts[1], ".k8s.io")
+		prefix = prefix + ToValidOperationID(trimmed, prefix != "")
+		tag := ToValidOperationID(trimmed, false)
+		if len(parts) > 2 {
+			prefix = prefix + ToValidOperationID(parts[2], prefix != "")
+			tag = tag + "_" + ToValidOperationID(parts[2], false)
+		}
+		tags = append(tags, tag)
+	} else if len(parts) >= 1 {
+		tags = append(tags, ToValidOperationID(parts[0], false))
+	}
+	return prefix + ToValidOperationID(op, prefix != ""), tags, nil
+}
+
+type groupVersionKinds []v1.GroupVersionKind
+
+func (s groupVersionKinds) Len() int {
+	return len(s)
+}
+
+func (s groupVersionKinds) Swap(i, j int) {
+	s[i], s[j] = s[j], s[i]
+}
+
+func (s groupVersionKinds) Less(i, j int) bool {
+	if s[i].Group == s[j].Group {
+		if s[i].Version == s[j].Version {
+			return s[i].Kind < s[j].Kind
+		}
+		return s[i].Version < s[j].Version
+	}
+	return s[i].Group < s[j].Group
+}
+
+func (s groupVersionKinds) JSON() []interface{} {
+	j := []interface{}{}
+	for _, gvk := range s {
+		j = append(j, map[string]interface{}{
+			"group":   gvk.Group,
+			"version": gvk.Version,
+			"kind":    gvk.Kind,
+		})
+	}
+	return j
+}
+
+// DefinitionNamer is the type to customize OpenAPI definition name.
+type DefinitionNamer struct {
+	typeGroupVersionKinds map[string]groupVersionKinds
+}
+
+func gvkConvert(gvk schema.GroupVersionKind) v1.GroupVersionKind {
+	return v1.GroupVersionKind{
+		Group:   gvk.Group,
+		Version: gvk.Version,
+		Kind:    gvk.Kind,
+	}
+}
+
+func friendlyName(name string) string {
+	nameParts := strings.Split(name, "/")
+	// Reverse first part. e.g., io.k8s... instead of k8s.io...
+	if len(nameParts) > 0 && strings.Contains(nameParts[0], ".") {
+		parts := strings.Split(nameParts[0], ".")
+		for i, j := 0, len(parts)-1; i < j; i, j = i+1, j-1 {
+			parts[i], parts[j] = parts[j], parts[i]
+		}
+		nameParts[0] = strings.Join(parts, ".")
+	}
+	return strings.Join(nameParts, ".")
+}
+
+func typeName(t reflect.Type) string {
+	path := t.PkgPath()
+	if strings.Contains(path, "/vendor/") {
+		path = path[strings.Index(path, "/vendor/")+len("/vendor/"):]
+	}
+	return fmt.Sprintf("%s.%s", path, t.Name())
+}
+
+// NewDefinitionNamer constructs a new DefinitionNamer to be used to customize OpenAPI spec.
+func NewDefinitionNamer(schemes ...*runtime.Scheme) *DefinitionNamer {
+	ret := &DefinitionNamer{
+		typeGroupVersionKinds: map[string]groupVersionKinds{},
+	}
+	for _, s := range schemes {
+		for gvk, rtype := range s.AllKnownTypes() {
+			newGVK := gvkConvert(gvk)
+			exists := false
+			for _, existingGVK := range ret.typeGroupVersionKinds[typeName(rtype)] {
+				if newGVK == existingGVK {
+					exists = true
+					break
+				}
+			}
+			if !exists {
+				ret.typeGroupVersionKinds[typeName(rtype)] = append(ret.typeGroupVersionKinds[typeName(rtype)], newGVK)
+			}
+		}
+	}
+	for _, gvk := range ret.typeGroupVersionKinds {
+		sort.Sort(gvk)
+	}
+	return ret
+}
+
+// GetDefinitionName returns the name and tags for a given definition
+func (d *DefinitionNamer) GetDefinitionName(name string) (string, spec.Extensions) {
+	if groupVersionKinds, ok := d.typeGroupVersionKinds[name]; ok {
+		return friendlyName(name), spec.Extensions{
+			extensionGVK: groupVersionKinds.JSON(),
+		}
+	}
+	return friendlyName(name), nil
+}