Move informer_factory to staging

pkg/controller/garbagecollector/graph_builder.go

@@ -34,7 +34,7 @@ import (
 	"k8s.io/client-go/metadata"
 	"k8s.io/client-go/tools/cache"
 	"k8s.io/client-go/util/workqueue"
-	"k8s.io/kubernetes/pkg/controller"
+	"k8s.io/controller-manager/pkg/informerfactory"
 	"k8s.io/kubernetes/pkg/controller/garbagecollector/metaonly"
 )
 
@@ -102,7 +102,7 @@ type GraphBuilder struct {
 	// GraphBuilder and GC share the absentOwnerCache. Objects that are known to
 	// be non-existent are added to the cached.
 	absentOwnerCache *UIDCache
-	sharedInformers  controller.InformerFactory
+	sharedInformers  informerfactory.InformerFactory
 	ignoredResources map[schema.GroupResource]struct{}
 }