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/kubernetes/pkg/apis/policy/helper.go

@@ -0,0 +1,51 @@
+/*
+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 policy
+
+import (
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+)
+
+const (
+	PDBV1beta1Label = "pdb.kubernetes.io/deprecated-v1beta1-empty-selector-match"
+)
+
+var (
+	NonV1beta1MatchAllSelector  = &metav1.LabelSelector{}
+	NonV1beta1MatchNoneSelector = &metav1.LabelSelector{
+		MatchExpressions: []metav1.LabelSelectorRequirement{{Key: PDBV1beta1Label, Operator: metav1.LabelSelectorOpExists}},
+	}
+
+	V1beta1MatchNoneSelector = &metav1.LabelSelector{}
+	V1beta1MatchAllSelector  = &metav1.LabelSelector{
+		MatchExpressions: []metav1.LabelSelectorRequirement{{Key: PDBV1beta1Label, Operator: metav1.LabelSelectorOpDoesNotExist}},
+	}
+)
+
+func StripPDBV1beta1Label(selector *metav1.LabelSelector) {
+	if selector == nil {
+		return
+	}
+
+	trimmedMatchExpressions := selector.MatchExpressions[:0]
+	for _, exp := range selector.MatchExpressions {
+		if exp.Key != PDBV1beta1Label {
+			trimmedMatchExpressions = append(trimmedMatchExpressions, exp)
+		}
+	}
+	selector.MatchExpressions = trimmedMatchExpressions
+}