This patch adds the openstack-ansible-security repository into the
openstack-ansible 'big tent'. This will be an Ansible role which
deployers optionally choose to consume.
Change-Id: Id98ece8943f52fe7acca45811412872d7f19e2a7
Depends-On: I89cd1367b13c8b85b4e76ab8281c15dbae571c01