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/conversion/converter.go

@@ -0,0 +1,225 @@
+/*
+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 conversion
+
+import (
+	"fmt"
+	"reflect"
+)
+
+type typePair struct {
+	source reflect.Type
+	dest   reflect.Type
+}
+
+type NameFunc func(t reflect.Type) string
+
+var DefaultNameFunc = func(t reflect.Type) string { return t.Name() }
+
+// ConversionFunc converts the object a into the object b, reusing arrays or objects
+// or pointers if necessary. It should return an error if the object cannot be converted
+// or if some data is invalid. If you do not wish a and b to share fields or nested
+// objects, you must copy a before calling this function.
+type ConversionFunc func(a, b interface{}, scope Scope) error
+
+// Converter knows how to convert one type to another.
+type Converter struct {
+	// Map from the conversion pair to a function which can
+	// do the conversion.
+	conversionFuncs          ConversionFuncs
+	generatedConversionFuncs ConversionFuncs
+
+	// Set of conversions that should be treated as a no-op
+	ignoredUntypedConversions map[typePair]struct{}
+}
+
+// NewConverter creates a new Converter object.
+// Arg NameFunc is just for backward compatibility.
+func NewConverter(NameFunc) *Converter {
+	c := &Converter{
+		conversionFuncs:           NewConversionFuncs(),
+		generatedConversionFuncs:  NewConversionFuncs(),
+		ignoredUntypedConversions: make(map[typePair]struct{}),
+	}
+	c.RegisterUntypedConversionFunc(
+		(*[]byte)(nil), (*[]byte)(nil),
+		func(a, b interface{}, s Scope) error {
+			return Convert_Slice_byte_To_Slice_byte(a.(*[]byte), b.(*[]byte), s)
+		},
+	)
+	return c
+}
+
+// WithConversions returns a Converter that is a copy of c but with the additional
+// fns merged on top.
+func (c *Converter) WithConversions(fns ConversionFuncs) *Converter {
+	copied := *c
+	copied.conversionFuncs = c.conversionFuncs.Merge(fns)
+	return &copied
+}
+
+// DefaultMeta returns meta for a given type.
+func (c *Converter) DefaultMeta(t reflect.Type) *Meta {
+	return &Meta{}
+}
+
+// Convert_Slice_byte_To_Slice_byte prevents recursing into every byte
+func Convert_Slice_byte_To_Slice_byte(in *[]byte, out *[]byte, s Scope) error {
+	if *in == nil {
+		*out = nil
+		return nil
+	}
+	*out = make([]byte, len(*in))
+	copy(*out, *in)
+	return nil
+}
+
+// Scope is passed to conversion funcs to allow them to continue an ongoing conversion.
+// If multiple converters exist in the system, Scope will allow you to use the correct one
+// from a conversion function--that is, the one your conversion function was called by.
+type Scope interface {
+	// Call Convert to convert sub-objects. Note that if you call it with your own exact
+	// parameters, you'll run out of stack space before anything useful happens.
+	Convert(src, dest interface{}) error
+
+	// Meta returns any information originally passed to Convert.
+	Meta() *Meta
+}
+
+func NewConversionFuncs() ConversionFuncs {
+	return ConversionFuncs{
+		untyped: make(map[typePair]ConversionFunc),
+	}
+}
+
+type ConversionFuncs struct {
+	untyped map[typePair]ConversionFunc
+}
+
+// AddUntyped adds the provided conversion function to the lookup table for the types that are
+// supplied as a and b. a and b must be pointers or an error is returned. This method overwrites
+// previously defined functions.
+func (c ConversionFuncs) AddUntyped(a, b interface{}, fn ConversionFunc) error {
+	tA, tB := reflect.TypeOf(a), reflect.TypeOf(b)
+	if tA.Kind() != reflect.Pointer {
+		return fmt.Errorf("the type %T must be a pointer to register as an untyped conversion", a)
+	}
+	if tB.Kind() != reflect.Pointer {
+		return fmt.Errorf("the type %T must be a pointer to register as an untyped conversion", b)
+	}
+	c.untyped[typePair{tA, tB}] = fn
+	return nil
+}
+
+// Merge returns a new ConversionFuncs that contains all conversions from
+// both other and c, with other conversions taking precedence.
+func (c ConversionFuncs) Merge(other ConversionFuncs) ConversionFuncs {
+	merged := NewConversionFuncs()
+	for k, v := range c.untyped {
+		merged.untyped[k] = v
+	}
+	for k, v := range other.untyped {
+		merged.untyped[k] = v
+	}
+	return merged
+}
+
+// Meta is supplied by Scheme, when it calls Convert.
+type Meta struct {
+	// Context is an optional field that callers may use to pass info to conversion functions.
+	Context interface{}
+}
+
+// scope contains information about an ongoing conversion.
+type scope struct {
+	converter *Converter
+	meta      *Meta
+}
+
+// Convert continues a conversion.
+func (s *scope) Convert(src, dest interface{}) error {
+	return s.converter.Convert(src, dest, s.meta)
+}
+
+// Meta returns the meta object that was originally passed to Convert.
+func (s *scope) Meta() *Meta {
+	return s.meta
+}
+
+// RegisterUntypedConversionFunc registers a function that converts between a and b by passing objects of those
+// types to the provided function. The function *must* accept objects of a and b - this machinery will not enforce
+// any other guarantee.
+func (c *Converter) RegisterUntypedConversionFunc(a, b interface{}, fn ConversionFunc) error {
+	return c.conversionFuncs.AddUntyped(a, b, fn)
+}
+
+// RegisterGeneratedUntypedConversionFunc registers a function that converts between a and b by passing objects of those
+// types to the provided function. The function *must* accept objects of a and b - this machinery will not enforce
+// any other guarantee.
+func (c *Converter) RegisterGeneratedUntypedConversionFunc(a, b interface{}, fn ConversionFunc) error {
+	return c.generatedConversionFuncs.AddUntyped(a, b, fn)
+}
+
+// RegisterIgnoredConversion registers a "no-op" for conversion, where any requested
+// conversion between from and to is ignored.
+func (c *Converter) RegisterIgnoredConversion(from, to interface{}) error {
+	typeFrom := reflect.TypeOf(from)
+	typeTo := reflect.TypeOf(to)
+	if typeFrom.Kind() != reflect.Pointer {
+		return fmt.Errorf("expected pointer arg for 'from' param 0, got: %v", typeFrom)
+	}
+	if typeTo.Kind() != reflect.Pointer {
+		return fmt.Errorf("expected pointer arg for 'to' param 1, got: %v", typeTo)
+	}
+	c.ignoredUntypedConversions[typePair{typeFrom, typeTo}] = struct{}{}
+	return nil
+}
+
+// Convert will translate src to dest if it knows how. Both must be pointers.
+// If no conversion func is registered and the default copying mechanism
+// doesn't work on this type pair, an error will be returned.
+// 'meta' is given to allow you to pass information to conversion functions,
+// it is not used by Convert() other than storing it in the scope.
+// Not safe for objects with cyclic references!
+func (c *Converter) Convert(src, dest interface{}, meta *Meta) error {
+	pair := typePair{reflect.TypeOf(src), reflect.TypeOf(dest)}
+	scope := &scope{
+		converter: c,
+		meta:      meta,
+	}
+
+	// ignore conversions of this type
+	if _, ok := c.ignoredUntypedConversions[pair]; ok {
+		return nil
+	}
+	if fn, ok := c.conversionFuncs.untyped[pair]; ok {
+		return fn(src, dest, scope)
+	}
+	if fn, ok := c.generatedConversionFuncs.untyped[pair]; ok {
+		return fn(src, dest, scope)
+	}
+
+	dv, err := EnforcePtr(dest)
+	if err != nil {
+		return err
+	}
+	sv, err := EnforcePtr(src)
+	if err != nil {
+		return err
+	}
+	return fmt.Errorf("converting (%s) to (%s): unknown conversion", sv.Type(), dv.Type())
+}

e2e/vendor/k8s.io/apimachinery/pkg/conversion/deep_equal.go

@@ -0,0 +1,47 @@
+/*
+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 conversion
+
+import (
+	"k8s.io/apimachinery/third_party/forked/golang/reflect"
+)
+
+// The code for this type must be located in third_party, since it forks from
+// go std lib. But for convenience, we expose the type here, too.
+type Equalities struct {
+	reflect.Equalities
+}
+
+// For convenience, panics on errors
+func EqualitiesOrDie(funcs ...interface{}) Equalities {
+	e := Equalities{reflect.Equalities{}}
+	if err := e.AddFuncs(funcs...); err != nil {
+		panic(err)
+	}
+	return e
+}
+
+// Performs a shallow copy of the equalities map
+func (e Equalities) Copy() Equalities {
+	result := Equalities{reflect.Equalities{}}
+
+	for key, value := range e.Equalities {
+		result.Equalities[key] = value
+	}
+
+	return result
+}

e2e/vendor/k8s.io/apimachinery/pkg/conversion/doc.go

@@ -0,0 +1,24 @@
+/*
+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 conversion provides go object versioning.
+//
+// Specifically, conversion provides a way for you to define multiple versions
+// of the same object. You may write functions which implement conversion logic,
+// but for the fields which did not change, copying is automated. This makes it
+// easy to modify the structures you use in memory without affecting the format
+// you store on disk or respond to in your external API calls.
+package conversion // import "k8s.io/apimachinery/pkg/conversion"

e2e/vendor/k8s.io/apimachinery/pkg/conversion/helper.go

@@ -0,0 +1,39 @@
+/*
+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 conversion
+
+import (
+	"fmt"
+	"reflect"
+)
+
+// EnforcePtr ensures that obj is a pointer of some sort. Returns a reflect.Value
+// of the dereferenced pointer, ensuring that it is settable/addressable.
+// Returns an error if this is not possible.
+func EnforcePtr(obj interface{}) (reflect.Value, error) {
+	v := reflect.ValueOf(obj)
+	if v.Kind() != reflect.Pointer {
+		if v.Kind() == reflect.Invalid {
+			return reflect.Value{}, fmt.Errorf("expected pointer, but got invalid kind")
+		}
+		return reflect.Value{}, fmt.Errorf("expected pointer, but got %v type", v.Type())
+	}
+	if v.IsNil() {
+		return reflect.Value{}, fmt.Errorf("expected pointer, but got nil")
+	}
+	return v.Elem(), nil
+}

e2e/vendor/k8s.io/apimachinery/pkg/conversion/queryparams/convert.go

@@ -0,0 +1,194 @@
+/*
+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 queryparams
+
+import (
+	"fmt"
+	"net/url"
+	"reflect"
+	"strings"
+)
+
+// Marshaler converts an object to a query parameter string representation
+type Marshaler interface {
+	MarshalQueryParameter() (string, error)
+}
+
+// Unmarshaler converts a string representation to an object
+type Unmarshaler interface {
+	UnmarshalQueryParameter(string) error
+}
+
+func jsonTag(field reflect.StructField) (string, bool) {
+	structTag := field.Tag.Get("json")
+	if len(structTag) == 0 {
+		return "", false
+	}
+	parts := strings.Split(structTag, ",")
+	tag := parts[0]
+	if tag == "-" {
+		tag = ""
+	}
+	omitempty := false
+	parts = parts[1:]
+	for _, part := range parts {
+		if part == "omitempty" {
+			omitempty = true
+			break
+		}
+	}
+	return tag, omitempty
+}
+
+func isPointerKind(kind reflect.Kind) bool {
+	return kind == reflect.Pointer
+}
+
+func isStructKind(kind reflect.Kind) bool {
+	return kind == reflect.Struct
+}
+
+func isValueKind(kind reflect.Kind) bool {
+	switch kind {
+	case reflect.String, reflect.Bool, reflect.Int, reflect.Int8, reflect.Int16,
+		reflect.Int32, reflect.Int64, reflect.Uint, reflect.Uint8,
+		reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Float32,
+		reflect.Float64, reflect.Complex64, reflect.Complex128:
+		return true
+	default:
+		return false
+	}
+}
+
+func zeroValue(value reflect.Value) bool {
+	return reflect.DeepEqual(reflect.Zero(value.Type()).Interface(), value.Interface())
+}
+
+func customMarshalValue(value reflect.Value) (reflect.Value, bool) {
+	// Return unless we implement a custom query marshaler
+	if !value.CanInterface() {
+		return reflect.Value{}, false
+	}
+
+	marshaler, ok := value.Interface().(Marshaler)
+	if !ok {
+		if !isPointerKind(value.Kind()) && value.CanAddr() {
+			marshaler, ok = value.Addr().Interface().(Marshaler)
+			if !ok {
+				return reflect.Value{}, false
+			}
+		} else {
+			return reflect.Value{}, false
+		}
+	}
+
+	// Don't invoke functions on nil pointers
+	// If the type implements MarshalQueryParameter, AND the tag is not omitempty, AND the value is a nil pointer, "" seems like a reasonable response
+	if isPointerKind(value.Kind()) && zeroValue(value) {
+		return reflect.ValueOf(""), true
+	}
+
+	// Get the custom marshalled value
+	v, err := marshaler.MarshalQueryParameter()
+	if err != nil {
+		return reflect.Value{}, false
+	}
+	return reflect.ValueOf(v), true
+}
+
+func addParam(values url.Values, tag string, omitempty bool, value reflect.Value) {
+	if omitempty && zeroValue(value) {
+		return
+	}
+	val := ""
+	iValue := fmt.Sprintf("%v", value.Interface())
+
+	if iValue != "<nil>" {
+		val = iValue
+	}
+	values.Add(tag, val)
+}
+
+func addListOfParams(values url.Values, tag string, omitempty bool, list reflect.Value) {
+	for i := 0; i < list.Len(); i++ {
+		addParam(values, tag, omitempty, list.Index(i))
+	}
+}
+
+// Convert takes an object and converts it to a url.Values object using JSON tags as
+// parameter names. Only top-level simple values, arrays, and slices are serialized.
+// Embedded structs, maps, etc. will not be serialized.
+func Convert(obj interface{}) (url.Values, error) {
+	result := url.Values{}
+	if obj == nil {
+		return result, nil
+	}
+	var sv reflect.Value
+	switch reflect.TypeOf(obj).Kind() {
+	case reflect.Pointer, reflect.Interface:
+		sv = reflect.ValueOf(obj).Elem()
+	default:
+		return nil, fmt.Errorf("expecting a pointer or interface")
+	}
+	st := sv.Type()
+	if !isStructKind(st.Kind()) {
+		return nil, fmt.Errorf("expecting a pointer to a struct")
+	}
+
+	// Check all object fields
+	convertStruct(result, st, sv)
+
+	return result, nil
+}
+
+func convertStruct(result url.Values, st reflect.Type, sv reflect.Value) {
+	for i := 0; i < st.NumField(); i++ {
+		field := sv.Field(i)
+		tag, omitempty := jsonTag(st.Field(i))
+		if len(tag) == 0 {
+			continue
+		}
+		ft := field.Type()
+
+		kind := ft.Kind()
+		if isPointerKind(kind) {
+			ft = ft.Elem()
+			kind = ft.Kind()
+			if !field.IsNil() {
+				field = reflect.Indirect(field)
+				// If the field is non-nil, it should be added to params
+				// and the omitempty should be overwite to false
+				omitempty = false
+			}
+		}
+
+		switch {
+		case isValueKind(kind):
+			addParam(result, tag, omitempty, field)
+		case kind == reflect.Array || kind == reflect.Slice:
+			if isValueKind(ft.Elem().Kind()) {
+				addListOfParams(result, tag, omitempty, field)
+			}
+		case isStructKind(kind) && !(zeroValue(field) && omitempty):
+			if marshalValue, ok := customMarshalValue(field); ok {
+				addParam(result, tag, omitempty, marshalValue)
+			} else {
+				convertStruct(result, ft, field)
+			}
+		}
+	}
+}

e2e/vendor/k8s.io/apimachinery/pkg/conversion/queryparams/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 queryparams provides conversion from versioned
+// runtime objects to URL query values
+package queryparams // import "k8s.io/apimachinery/pkg/conversion/queryparams"