Add generated file

This PR adds generated files under pkg/client and vendor folder.

vendor/k8s.io/kubernetes/pkg/kubelet/custommetrics/custom_metrics.go

@@ -0,0 +1,48 @@
+/*
+Copyright 2015 The Kubernetes 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 custommetrics contains support for instrumenting cAdvisor to gather custom metrics from pods.
+package custommetrics
+
+import (
+	"path"
+
+	"k8s.io/api/core/v1"
+)
+
+const (
+	CustomMetricsDefinitionContainerFile = "definition.json"
+
+	CustomMetricsDefinitionDir = "/etc/custom-metrics"
+)
+
+// Alpha implementation.
+// Returns a path to a cAdvisor-specific custom metrics configuration.
+func GetCAdvisorCustomMetricsDefinitionPath(container *v1.Container) (*string, error) {
+	// Assumes that the container has Custom Metrics enabled if it has "/etc/custom-metrics" directory
+	// mounted as a volume. Custom Metrics definition is expected to be in "definition.json".
+	if container.VolumeMounts != nil {
+		for _, volumeMount := range container.VolumeMounts {
+			if path.Clean(volumeMount.MountPath) == path.Clean(CustomMetricsDefinitionDir) {
+				// TODO: add definition file validation.
+				definitionPath := path.Clean(path.Join(volumeMount.MountPath, CustomMetricsDefinitionContainerFile))
+				return &definitionPath, nil
+			}
+		}
+	}
+	// No Custom Metrics definition available.
+	return nil, nil
+}