kubectl: Add Terminating state to PVCs

kubectl should show something when a PVC has a deletion timestamp and is
waiting for deletion. This patch follows Pod - it adds Terminating state.

For easier discovery of errors, finalizers are printed in `kubectl describe
pvc`.

pkg/printers/internalversion/printers.go

@@ -1226,6 +1226,10 @@ func printPersistentVolumeClaim(obj *api.PersistentVolumeClaim, options printers
 	}
 
 	phase := obj.Status.Phase
+	if obj.ObjectMeta.DeletionTimestamp != nil {
+		phase = "Terminating"
+	}
+
 	storage := obj.Spec.Resources.Requests[api.ResourceStorage]
 	capacity := ""
 	accessModes := ""