Add OpenStack-Ansible metadata
Add OpenStack-Ansible metadata

We need to add openstack ansible information in the role
metadata to be able to track role maturity. With it,
we can create a role maturity table and take decisions about
role deprecations.

Change-Id: If60e1fd819709b35e4481f05e3735ccc3c8986de

openstack/openstack-ansible-rabbitmq_server,openstack/openstack-ansible-rabbitmq_server