Plumb event recorder to garbage collector controller

pkg/controller/garbagecollector/graph_builder.go

@@ -33,6 +33,7 @@ import (
 	"k8s.io/apimachinery/pkg/util/wait"
 	"k8s.io/client-go/metadata"
 	"k8s.io/client-go/tools/cache"
+	"k8s.io/client-go/tools/record"
 	"k8s.io/client-go/util/workqueue"
 	"k8s.io/controller-manager/pkg/informerfactory"
 	"k8s.io/kubernetes/pkg/controller/garbagecollector/metaonly"
@@ -89,6 +90,8 @@ type GraphBuilder struct {
 	// it is protected by monitorLock.
 	running bool
 
+	eventRecorder record.EventRecorder
+
 	metadataClient metadata.Interface
 	// monitors are the producer of the graphChanges queue, graphBuilder alters
 	// the in-memory graph according to the changes.