Migrate to containerd 1.54

Signed-off-by: Alex Ellis (OpenFaaS Ltd) <alexellis2@gmail.com>

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

@@ -0,0 +1,66 @@
+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.
+//
+// The argument must be an absolute path, with all symlinks resolved, and clean.
+// One way to ensure it is to process the path using filepath.Abs followed by
+// filepath.EvalSymlinks before calling this function.
+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
+}