Updating dependency github.com/google/cadvisor to version 6a8d614

Signed-off-by: Davanum Srinivas <davanum@gmail.com>

vendor/github.com/google/cadvisor/stats/noop.go

@@ -0,0 +1,43 @@
+// Copyright 2020 Google Inc. All Rights Reserved.
+//
+// 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.
+
+// Noop perf Manager and Collector.
+package stats
+
+import (
+	v1 "github.com/google/cadvisor/info/v1"
+	"k8s.io/klog/v2"
+)
+
+type NoopManager struct {
+	NoopDestroy
+}
+
+type NoopDestroy struct{}
+
+func (nsd NoopDestroy) Destroy() {
+	klog.V(5).Info("No-op Destroy function called")
+}
+
+func (m *NoopManager) GetCollector(cgroup string) (Collector, error) {
+	return &NoopCollector{}, nil
+}
+
+type NoopCollector struct {
+	NoopDestroy
+}
+
+func (c *NoopCollector) UpdateStats(stats *v1.ContainerStats) error {
+	return nil
+}