[DOC] add doc page for repo_server role

Change-Id: Idefb279501bf837bcc0920b1e5ffc47467725e5a

README.rst

@@ -11,5 +11,11 @@ Team and repository tags
 OpenStack-Ansible Repo Server
 =============================
 
-Ansible role that deploys a repository server for python packages and git
-sources.
+Ansible role that deploys a repository server for python packages, git
+sources and package caching for deb/rpm.
+
+Documentation for the project can be found at:
+`<http://docs.openstack.org/developer/openstack-ansible-repo_server/>`_
+
+The project home is at:
+  http://launchpad.net/openstack-ansible

doc/source/index.rst

@@ -2,8 +2,22 @@
 OpenStack-Ansible Repo Server
 =============================
 
-Example playbooks
+Ansible role that deploys a repository server for python packages, git
+sources and package caching for deb/rpm.
+
+To clone or view the source code for this repository, visit the role repository
+for `repo_server <https://github.com/openstack/openstack-ansible-repo_server>`_.
+
+Default variables
 ~~~~~~~~~~~~~~~~~
+.. literalinclude:: ../../defaults/main.yml
+   :language: yaml
+   :start-after: under the License.
+
+Required variables
+~~~~~~~~~~~~~~~~~~
+
+None.
 
 Example playbook
 ~~~~~~~~~~~~~~~~