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: Ic55c57d09fef0a8f044a060f32e7040daaa0c3bc

openstack/openstack-ansible-memcached_server,openstack/openstack-ansible-memcached_server