Simplify labels for `kubecfg run`

We created a name=<controller name> label on each object we created.  This was confusing.  Instead, piggyback on `replicationController` label and use that as the selector.

pkg/kubecfg/kubecfg.go

@@ -168,7 +168,7 @@ func RunController(image, name string, replicas int, client client.Interface, po
 		DesiredState: api.ReplicationControllerState{
 			Replicas: replicas,
 			ReplicaSelector: map[string]string{
-				"name": name,
+				"replicationController": name,
 			},
 			PodTemplate: api.PodTemplate{
 				DesiredState: api.PodState{
@@ -184,13 +184,10 @@ func RunController(image, name string, replicas int, client client.Interface, po
 					},
 				},
 				Labels: map[string]string{
-					"name": name,
+					"replicationController": name,
 				},
 			},
 		},
-		Labels: map[string]string{
-			"name": name,
-		},
 	}
 
 	controllerOut, err := client.CreateReplicationController(controller)