Add secrets file

Also includes docs on the requirement to apply it and the common
means of generating values for it.

README.rst

@@ -7,7 +7,17 @@ to the OpenStack Ansible project.
 Requirements
 ------------
 
-None.
+Storage
+^^^^^^^
+You will need to have an appropriate set of data stores.
+This needs to be detailed separately in documentation to be written.
+
+Secrets
+^^^^^^^
+The secrets file (which should be copied to ``/etc/openstack_deploy`` in your
+deploy but originating from ``ext/openstack_deploy/user_gnocchi_secrets.yml``)
+needs to have values specified. This can be done by invoking the generator
+found in the openstack-ansible project: ``scripts/pw-token-gen.py``
 
 Role Variables
 --------------

ext/openstack_deploy/user_gnocchi_secrets.yml

@@ -0,0 +1,19 @@
+---
+# Copyright 2015, Steve Lewis 
+#
+# 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.
+
+gnocchi_indexer_db_password:
+gnocchi_service_password:
+gnocchi_storage_password:
+