update vendor to use containerd cgroups

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

@@ -0,0 +1,37 @@
+/*
+   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 NewPerfEvent(root string) *PerfEventController {
+	return &PerfEventController{
+		root: filepath.Join(root, string(PerfEvent)),
+	}
+}
+
+type PerfEventController struct {
+	root string
+}
+
+func (p *PerfEventController) Name() Name {
+	return PerfEvent
+}
+
+func (p *PerfEventController) Path(path string) string {
+	return filepath.Join(p.root, path)
+}