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_helper_windows.go

@@ -0,0 +1,101 @@
+// +build windows
+
+/*
+Copyright 2019 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 (
+	"fmt"
+	"os"
+	"strconv"
+	"strings"
+	"syscall"
+
+	"k8s.io/klog/v2"
+)
+
+// following failure codes are from https://docs.microsoft.com/en-us/windows/desktop/debug/system-error-codes--1300-1699-
+// ERROR_BAD_NETPATH                 = 53
+// ERROR_NETWORK_BUSY                = 54
+// ERROR_UNEXP_NET_ERR               = 59
+// ERROR_NETNAME_DELETED             = 64
+// ERROR_NETWORK_ACCESS_DENIED       = 65
+// ERROR_BAD_DEV_TYPE                = 66
+// ERROR_BAD_NET_NAME                = 67
+// ERROR_SESSION_CREDENTIAL_CONFLICT = 1219
+// ERROR_LOGON_FAILURE               = 1326
+var errorNoList = [...]int{53, 54, 59, 64, 65, 66, 67, 1219, 1326}
+
+// IsCorruptedMnt return true if err is about corrupted mount point
+func IsCorruptedMnt(err error) bool {
+	if err == nil {
+		return false
+	}
+
+	var underlyingError error
+	switch pe := err.(type) {
+	case nil:
+		return false
+	case *os.PathError:
+		underlyingError = pe.Err
+	case *os.LinkError:
+		underlyingError = pe.Err
+	case *os.SyscallError:
+		underlyingError = pe.Err
+	}
+
+	if ee, ok := underlyingError.(syscall.Errno); ok {
+		for _, errno := range errorNoList {
+			if int(ee) == errno {
+				klog.Warningf("IsCorruptedMnt failed with error: %v, error code: %v", err, errno)
+				return true
+			}
+		}
+	}
+
+	return false
+}
+
+// NormalizeWindowsPath makes sure the given path is a valid path on Windows
+// systems by making sure all instances of `/` are replaced with `\\`, and the
+// path beings with `c:`
+func NormalizeWindowsPath(path string) string {
+	normalizedPath := strings.Replace(path, "/", "\\", -1)
+	if strings.HasPrefix(normalizedPath, "\\") {
+		normalizedPath = "c:" + normalizedPath
+	}
+	return normalizedPath
+}
+
+// ValidateDiskNumber : disk number should be a number in [0, 99]
+func ValidateDiskNumber(disk string) error {
+	diskNum, err := strconv.Atoi(disk)
+	if err != nil {
+		return fmt.Errorf("wrong disk number format: %q, err:%v", disk, err)
+	}
+
+	if diskNum < 0 || diskNum > 99 {
+		return fmt.Errorf("disk number out of range: %q", disk)
+	}
+
+	return nil
+}
+
+// isMountPointMatch determines if the mountpoint matches the dir
+func isMountPointMatch(mp MountPoint, dir string) bool {
+	return mp.Path == dir
+}