manully sync up to 1634d8f9f72a626b16c55573d78e8da2d75e6356

(merging https://github.com/kubernetes/kubernetes/pull/42084). For the new publish
script to work, client-go has to be synced up to when k8s.io/kubernetes doesn't
include _vendor

kubernetes/scheme/doc.go

@@ -0,0 +1,20 @@
+/*
+Copyright 2017 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// This package is generated by client-gen with custom arguments.
+
+// This package contains the scheme of the automatically generated clientset.
+package scheme