rebase: update k8s.io/mount-utils to current master

kubernetes/kubernetes#111083 has been merged and synced into
k8s.io/mount-utils. This should remove any systemd log messages while
calling NodeStageVolume and NodeGetVolumeStats.

Signed-off-by: Niels de Vos <ndevos@redhat.com>

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

@@ -32,8 +32,9 @@ type FakeMounter struct {
 	MountCheckErrors map[string]error
 	// Some tests run things in parallel, make sure the mounter does not produce
 	// any golang's DATA RACE warnings.
-	mutex       sync.Mutex
-	UnmountFunc UnmountFunc
+	mutex               sync.Mutex
+	UnmountFunc         UnmountFunc
+	skipMountPointCheck bool
 }
 
 // UnmountFunc is a function callback to be executed during the Unmount() call.
@@ -64,6 +65,11 @@ func NewFakeMounter(mps []MountPoint) *FakeMounter {
 	}
 }
 
+func (f *FakeMounter) WithSkipMountPointCheck() *FakeMounter {
+	f.skipMountPointCheck = true
+	return f
+}
+
 // ResetLog clears all the log entries in FakeMounter
 func (f *FakeMounter) ResetLog() {
 	f.mutex.Lock()
@@ -212,6 +218,18 @@ func (f *FakeMounter) IsLikelyNotMountPoint(file string) (bool, error) {
 	return true, nil
 }
 
+func (f *FakeMounter) canSafelySkipMountPointCheck() bool {
+	return f.skipMountPointCheck
+}
+
+func (f *FakeMounter) IsMountPoint(file string) (bool, error) {
+	notMnt, err := f.IsLikelyNotMountPoint(file)
+	if err != nil {
+		return false, err
+	}
+	return !notMnt, nil
+}
+
 // GetMountRefs finds all mount references to the path, returns a
 // list of paths.
 func (f *FakeMounter) GetMountRefs(pathname string) ([]string, error) {