fix golint failures of pkg/kubelet/configmap pkg/kubelet/custommetrics

pkg/kubelet/configmap/configmap_manager.go

@@ -33,6 +33,7 @@ import (
 	"k8s.io/apimachinery/pkg/watch"
 )
 
+// Manager interface provides methods for Kubelet to manage ConfigMap.
 type Manager interface {
 	// Get configmap by configmap namespace and name.
 	GetConfigMap(namespace, name string) (*v1.ConfigMap, error)
@@ -54,6 +55,7 @@ type simpleConfigMapManager struct {
 	kubeClient clientset.Interface
 }
 
+// NewSimpleConfigMapManager creates a new ConfigMapManager instance.
 func NewSimpleConfigMapManager(kubeClient clientset.Interface) Manager {
 	return &simpleConfigMapManager{kubeClient: kubeClient}
 }

pkg/kubelet/configmap/fake_manager.go

@@ -25,6 +25,7 @@ import (
 type fakeManager struct {
 }
 
+// NewFakeManager creates empty/fake ConfigMap manager
 func NewFakeManager() Manager {
 	return &fakeManager{}
 }