Add a nodepool dib script to create /etc/nodepool

/etc/nodepool is required by nodepool to exist after nodes are booted.
We must then create it in our images. Add a finalize step to create this
dir as it isn't necessary until the node boots (not necessary for image
creation).

Change-Id: I42cc32a261a632d127963eb06333d1ef58f6d88d

modules/openstack_project/files/nodepool/elements/nodepool-base/finalise.d/99-nodepool-dir

@@ -0,0 +1,24 @@
+#!/bin/bash
+# Copyright (C) 2011-2013 OpenStack Foundation
+#
+# 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.
+
+set -ex
+
+# Nodepool expects this dir to exist when it boots slaves.
+# Nodepool writes environment info to this dir. We set the mode
+# to 0777 so that any user can access this env info.
+mkdir /etc/nodepool
+chmod 0777 /etc/nodepool