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/github.com/moby/sys/mountinfo/mountinfo.go

@@ -0,0 +1,67 @@
+package mountinfo
+
+import (
+	"os"
+)
+
+// GetMounts retrieves a list of mounts for the current running process,
+// with an optional filter applied (use nil for no filter).
+func GetMounts(f FilterFunc) ([]*Info, error) {
+	return parseMountTable(f)
+}
+
+// Mounted determines if a specified path is a mount point. In case of any
+// error, false (and an error) is returned.
+//
+// If a non-existent path is specified, an appropriate error is returned.
+// In case the caller is not interested in this particular error, it should
+// be handled separately using e.g. errors.Is(err, os.ErrNotExist).
+func Mounted(path string) (bool, error) {
+	// root is always mounted
+	if path == string(os.PathSeparator) {
+		return true, nil
+	}
+	return mounted(path)
+}
+
+// Info reveals information about a particular mounted filesystem. This
+// struct is populated from the content in the /proc/<pid>/mountinfo file.
+type Info struct {
+	// ID is a unique identifier of the mount (may be reused after umount).
+	ID int
+
+	// Parent is the ID of the parent mount (or of self for the root
+	// of this mount namespace's mount tree).
+	Parent int
+
+	// Major and Minor are the major and the minor components of the Dev
+	// field of unix.Stat_t structure returned by unix.*Stat calls for
+	// files on this filesystem.
+	Major, Minor int
+
+	// Root is the pathname of the directory in the filesystem which forms
+	// the root of this mount.
+	Root string
+
+	// Mountpoint is the pathname of the mount point relative to the
+	// process's root directory.
+	Mountpoint string
+
+	// Options is a comma-separated list of mount options.
+	Options string
+
+	// Optional are zero or more fields of the form "tag[:value]",
+	// separated by a space.  Currently, the possible optional fields are
+	// "shared", "master", "propagate_from", and "unbindable". For more
+	// information, see mount_namespaces(7) Linux man page.
+	Optional string
+
+	// FSType is the filesystem type in the form "type[.subtype]".
+	FSType string
+
+	// Source is filesystem-specific information, or "none".
+	Source string
+
+	// VFSOptions is a comma-separated list of superblock options.
+	VFSOptions string
+}