Bump Libcontainer to latest head

vendor/github.com/opencontainers/runc/libcontainer/utils/utils.go

@@ -100,3 +100,22 @@ func SearchLabels(labels []string, query string) string {
 	}
 	return ""
 }
+
+// Annotations returns the bundle path and user defined annotations from the
+// libcontianer state.  We need to remove the bundle because that is a label
+// added by libcontainer.
+func Annotations(labels []string) (bundle string, userAnnotations map[string]string) {
+	userAnnotations = make(map[string]string)
+	for _, l := range labels {
+		parts := strings.SplitN(l, "=", 2)
+		if len(parts) < 2 {
+			continue
+		}
+		if parts[0] == "bundle" {
+			bundle = parts[1]
+		} else {
+			userAnnotations[parts[0]] = parts[1]
+		}
+	}
+	return
+}