Comment 2 for bug 1478509

Reviewed: https://review.openstack.org/205999
Committed: https://git.openstack.org/cgit/stackforge/kolla/commit/?id=0007d3325d22e27cac938aeb0cd7f914c469b5b2
Submitter: Jenkins
Branch: master

commit 0007d3325d22e27cac938aeb0cd7f914c469b5b2
Author: Sam Yaple <email address hidden>
Date: Mon Jul 27 10:38:35 2015 +0000

    Properly use groups throught Ansible

    Additionally, make each service optional witha config option allowing
    for extreme flexibility should the deployer want to replace a service
    with a non-kolla one (the database for example).

    Change-Id: I7b644da7cfa7e8e6b6878eb1b1aa97db830504ae
    Closes-Bug: #1478509