[DOCS] Refactor of nova role docs

Update the role documentation to match the newly proposed format.  In
the new format, each role project should maintain the configuration
variations for the role project itself.

Change-Id: I165891189ffa67680980a70178fd55951cad293b

README.rst

@@ -1,31 +1,19 @@
-OpenStack-Ansible Nova
-######################
+======================
+OpenStack-Ansible nova
+======================
 
-Ansible role that installs and configures OpenStack Nova and all of its
+Ansible role that installs and configures OpenStack nova and all of its
 corresponding services.
 
-Default Variables
-=================
+This role will install the following:
+    * nova-api
+    * nova-conductor
+    * nova-scheduler
+    * nova-console
+    * nova-cert
+    * nova-compute
 
-.. literalinclude:: ../../defaults/main.yml
-   :language: yaml
-   :start-after: under the License.
+Documentation for the project can be found at:
+`<http://docs.openstack.org/developer/openstack-ansible-os_keystone/>`_
 
-
-Required Variables
-==================
-
-.. code-block:: yaml
-    # comma separated list of Glance internalUrls
-    glance_api_servers: "http://glance_host:9292"
-
-
-Example Playbook
-================
-
-.. code-block:: yaml
-    - name: Playbook for deploying nova
-      hosts: nova_all
-      user: root
-      roles:
-        - { role: "os_nova" }
+The project home is at: `<http://launchpad.net/openstack-ansible>`_