Use binary releases for cluster push scripts.

This is for GCE right now.  Other clouds/clusters are probably broken.

cluster/saltbase/install.sh

@@ -0,0 +1,50 @@
+#!/bin/bash
+
+# Copyright 2014 Google Inc. 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.
+
+# This script will set up the salt directory on the target server.  It takes one
+# argument that is a tarball with the pre-compiled kuberntes server binaries.
+
+set -o errexit
+set -o nounset
+set -o pipefail
+
+readonly SALTBASE="$(dirname $0)"
+
+readonly SERVER_BIN_TAR=${1-}
+if [[ -z "$SERVER_BIN_TAR" ]]; then
+  echo "!!! No binaries specified"
+  exit 1
+fi
+
+# Create a temp dir for untaring
+KUBE_TEMP=$(mktemp -d -t kubernetes.XXXXXX)
+trap "rm -rf ${KUBE_TEMP}" EXIT
+
+# This file is meant to run on the master.  It will install the salt configs
+# into the appropriate place on the master.
+
+echo "+++ Installing salt files"
+mkdir -p /srv
+# This bash voodoo will prepend $SALTBASE to the start of each item in the
+# $SALTDIRS array
+readonly SALTDIRS=(salt pillar reactor)
+cp -R --preserve=mode "${SALTDIRS[@]/#/${SALTBASE}/}" /srv/
+
+
+echo "+++ Install binaries from tar: $1"
+tar -xz -C "${KUBE_TEMP}" -f "$1"
+mkdir -p /srv/salt/kube-bins
+cp "${KUBE_TEMP}/kubernetes/server/bin/"* /srv/salt/kube-bins/