update vendor to use containerd cgroups

vendor/github.com/containerd/cgroups/named.go

@@ -0,0 +1,39 @@
+/*
+   Copyright The containerd 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 cgroups
+
+import "path/filepath"
+
+func NewNamed(root string, name Name) *namedController {
+	return &namedController{
+		root: root,
+		name: name,
+	}
+}
+
+type namedController struct {
+	root string
+	name Name
+}
+
+func (n *namedController) Name() Name {
+	return n.name
+}
+
+func (n *namedController) Path(path string) string {
+	return filepath.Join(n.root, string(n.name), path)
+}