Comment 1 for bug 1499859

FYI, I've a role in ansible-galaxy: https://github.com/evrardjp/ansible-openstack-horizon-branding that can help you with that.
It's currently not included in openstack-ansible.

I'm currently using it in the way mentionned in the docs (http://docs.openstack.org/developer/openstack-ansible/developer-docs/extending.html), by extending openstack-ansible with my own roles.

As this is really openstack related, it's hard to test this role separately, so it's maybe worth including in openstack-ansible.