Comment 9 for bug 1653947

Reviewed: https://review.openstack.org/417832
Committed: https://git.openstack.org/cgit/openstack/openstack-ansible-galera_server/commit/?id=4a2ad199481c4fa9b0fbc701b272f33632a728fd
Submitter: Jenkins
Branch: stable/newton

commit 4a2ad199481c4fa9b0fbc701b272f33632a728fd
Author: Jean-Philippe Evrard <email address hidden>
Date: Fri Jan 6 12:08:30 2017 +0000

    Remove percona repo if not used

    If the ``use_percona_upstream`` value is changed from True to False,
    don't remove the existing repository. This is also the source of a bug
    in Mitaka: We were installing the repo by default and installed the
    percona-xtrabackup tool with a deb file. If another playbook/role
    installed percona-xtrabackup, it would override (and probably upgrade)
    the deb installed version, which is undesired.

    Combined backport of:
    - https://review.openstack.org/#/c/417362/
    - https://review.openstack.org/#/c/417776/
    - https://review.openstack.org/#/c/416234/

    Change-Id: Ibb2f01e6b61774a2517feb5baf4a5452b7f68a84
    Closes-Bug: 1653947
    Signed-off-by: Jean-Philippe Evrard <email address hidden>