don't ship kube-registry-proxy and pause in tars.

pause is built into containervm. if it's not on the machine we should just pull
it. nobody that I'm aware of uses kube-registry-proxy and it makes build/deployment
more complicated and slower.

cluster/addons/python-image/Makefile

@@ -0,0 +1,25 @@
+# Copyright 2016 The Kubernetes Authors All rights reserved.
+#
+# 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.
+
+IMAGE=gcr.io/google_containers/python
+VERSION=v1
+
+.PHONY: build push
+
+build:
+	docker build -t "$(IMAGE):$(VERSION)" .
+
+push:
+	gcloud docker push "$(IMAGE):$(VERSION)"
+