rebase: update kubernetes to v1.20.0

updated kubernetes packages to latest
release.

Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>

vendor/k8s.io/mount-utils/mount_unsupported.go

@@ -0,0 +1,82 @@
+// +build !linux,!windows
+
+/*
+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 mount
+
+import (
+	"errors"
+)
+
+// Mounter implements mount.Interface for unsupported platforms
+type Mounter struct {
+	mounterPath string
+}
+
+var errUnsupported = errors.New("util/mount on this platform is not supported")
+
+// New returns a mount.Interface for the current system.
+// It provides options to override the default mounter behavior.
+// mounterPath allows using an alternative to `/bin/mount` for mounting.
+func New(mounterPath string) Interface {
+	return &Mounter{
+		mounterPath: mounterPath,
+	}
+}
+
+// Mount always returns an error on unsupported platforms
+func (mounter *Mounter) Mount(source string, target string, fstype string, options []string) error {
+	return errUnsupported
+}
+
+// MountSensitive always returns an error on unsupported platforms
+func (mounter *Mounter) MountSensitive(source string, target string, fstype string, options []string, sensitiveOptions []string) error {
+	return errUnsupported
+}
+
+// MountSensitiveWithoutSystemd always returns an error on unsupported platforms
+func (mounter *Mounter) MountSensitiveWithoutSystemd(source string, target string, fstype string, options []string, sensitiveOptions []string) error {
+	return errUnsupported
+}
+
+// Unmount always returns an error on unsupported platforms
+func (mounter *Mounter) Unmount(target string) error {
+	return errUnsupported
+}
+
+// List always returns an error on unsupported platforms
+func (mounter *Mounter) List() ([]MountPoint, error) {
+	return []MountPoint{}, errUnsupported
+}
+
+// IsLikelyNotMountPoint always returns an error on unsupported platforms
+func (mounter *Mounter) IsLikelyNotMountPoint(file string) (bool, error) {
+	return true, errUnsupported
+}
+
+// GetMountRefs always returns an error on unsupported platforms
+func (mounter *Mounter) GetMountRefs(pathname string) ([]string, error) {
+	return nil, errUnsupported
+}
+
+func (mounter *SafeFormatAndMount) formatAndMountSensitive(source string, target string, fstype string, options []string, sensitiveOptions []string) error {
+	return mounter.Interface.Mount(source, target, fstype, options)
+}
+
+func (mounter *SafeFormatAndMount) diskLooksUnformatted(disk string) (bool, error) {
+	return true, errUnsupported
+}