Script to workaround nodepool floating-ip leak

Nodepool leaks floating-ip address. Copy this script to
/etc/cron.hourly to clean up the leak.

Change-Id: Iccdd0b06f3bedd03e0556ae4f2ffca4a19390046

nodepool/clean_floating_ip.sh

@@ -0,0 +1,32 @@
+#!/usr/bin/env bash
+
+# Copyright (C) 2015 Hewlett-Packard Development Company, L.P.
+#
+# 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.
+#
+#
+# Nodepool tends to leak floating ip address. Workaround by adding this script to
+# /etc/cron.hourly to periodically clean up leaked ip addresses.
+#
+# export RC=/root/keystonerc_jenkins
+#
+
+RC=${RC:-"/home/stack/devstack/accrc/admin/admin"}
+
+source $RC
+for ip in `nova floating-ip-list | grep public | grep "| -" | cut -d \| -f 2`; do
+    echo "Deleting unused floating $ip"
+    nova floating-ip-delete $ip
+done