Kolla-ansible related documents existed on both Kolla and Kolla-Ansible
repositories. A lot of Kolla-ansible related documents were updated in
the Kolla repository. Porting the changes made to these documents in
Kolla repo to Kolla-Ansible repo so that the Kolla-ansible documents can
be removed (Refer to patch https://review.openstack.org/#/c/425749/)

Change-Id: I7c53626ce551189acdb0dcbabe9369b81eed3347