rebase: update kubernetes to v1.21.2

Updated kubernetes packages to latest release.
resizefs package has been included into k8s.io/mount-utils
package. updated code to use the same.

Updates: #1968

Signed-off-by: Rakshith R <rar@redhat.com>

vendor/k8s.io/component-base/cli/flag/sectioned.go

@@ -31,6 +31,8 @@ type NamedFlagSets struct {
 	Order []string
 	// FlagSets stores the flag sets by name.
 	FlagSets map[string]*pflag.FlagSet
+	// NormalizeNameFunc is the normalize function which used to initialize FlagSets created by NamedFlagSets.
+	NormalizeNameFunc func(f *pflag.FlagSet, name string) pflag.NormalizedName
 }
 
 // FlagSet returns the flag set with the given name and adds it to the
@@ -40,7 +42,12 @@ func (nfs *NamedFlagSets) FlagSet(name string) *pflag.FlagSet {
 		nfs.FlagSets = map[string]*pflag.FlagSet{}
 	}
 	if _, ok := nfs.FlagSets[name]; !ok {
-		nfs.FlagSets[name] = pflag.NewFlagSet(name, pflag.ExitOnError)
+		flagSet := pflag.NewFlagSet(name, pflag.ExitOnError)
+		flagSet.SetNormalizeFunc(pflag.CommandLine.GetNormalizeFunc())
+		if nfs.NormalizeNameFunc != nil {
+			flagSet.SetNormalizeFunc(nfs.NormalizeNameFunc)
+		}
+		nfs.FlagSets[name] = flagSet
 		nfs.Order = append(nfs.Order, name)
 	}
 	return nfs.FlagSets[name]

vendor/k8s.io/component-base/cli/flag/string_slice_flag.go

@@ -0,0 +1,59 @@
+/*
+Copyright 2021 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 flag
+
+import (
+	goflag "flag"
+	"strings"
+
+	"github.com/spf13/pflag"
+)
+
+// StringSlice implements goflag.Value and plfag.Value,
+// and allows set to be invoked repeatedly to accumulate values.
+type StringSlice struct {
+	value   *[]string
+	changed bool
+}
+
+func NewStringSlice(s *[]string) *StringSlice {
+	return &StringSlice{value: s}
+}
+
+var _ goflag.Value = &StringSlice{}
+var _ pflag.Value = &StringSlice{}
+
+func (s *StringSlice) String() string {
+	if s == nil || s.value == nil {
+		return ""
+	}
+	return strings.Join(*s.value, " ")
+}
+
+func (s *StringSlice) Set(val string) error {
+	if s.value == nil || !s.changed {
+		v := make([]string, 0)
+		s.value = &v
+	}
+	*s.value = append(*s.value, val)
+	s.changed = true
+	return nil
+}
+
+func (StringSlice) Type() string {
+	return "sliceString"
+}