Default database in ubuntu set to MariaDB as accidental consequence of patch

[Patrick Crews]

Change: I97cbede806e5c00363c7174fa1e9f286de96aab6 altered
the logic in lib/databases/mysql from installing mariadb only if
one was using rhel7 to installing it by default unless one was using
rhel6.

Change: Iae9a7a1c09f1fc83573c3926b3470955c244c401
Attempted to fix this, but only does so for precise.

Unless mariadb has become the default, I strongly prefer to keep
standard mysql as the database on ubuntu (precise or otherwise).

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/135503
Committed: https://git.openstack.org/cgit/openstack-dev/devstack/commit/?id=6de7dba863cfbe0fda6f918eea31adbd7d652676
Submitter: Jenkins
Branch: master

commit 6de7dba863cfbe0fda6f918eea31adbd7d652676
Author: pcrews <email address hidden>
Date: Tue Nov 18 20:50:00 2014 -0800

    Return mysql-server to default for all ubuntu installs

    Change: I97cbede806e5c00363c7174fa1e9f286de96aab6 altered
    the logic in lib/databases/mysql from installing mariadb only if
    one was using rhel7 to installing it by default unless one was using
    rhel6.

    Change: Iae9a7a1c09f1fc83573c3926b3470955c244c401
    Attempted to fix this, but only does so for precise.

    Unless mariadb has become the default, I strongly prefer to keep
    standard mysql as the database on ubuntu (precise or otherwise).

    Closes-Bug: 1395776

    Change-Id: I3afb89ae6d55405313b7219dd6daa24d9ca80f70

[Sean M. Collins (scollins)]

We should create a patch to roll back the mariadb install, or else people will hit it and have to try and fix on their own, like I did in

https://bugs.launchpad.net/devstack/+bug/1395776

[Sean M. Collins (scollins)]

Sorry duplicate is https://bugs.launchpad.net/devstack/+bug/1402789

[OpenStack Infra (hudson-openstack)]

Related fix proposed to branch: master
Review: https://review.openstack.org/141891

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/141891
Committed: https://git.openstack.org/cgit/openstack-dev/devstack/commit/?id=1cbb5d3f0c3200ce0446de59a8b9b3af1b8db483
Submitter: Jenkins
Branch: master

commit 1cbb5d3f0c3200ce0446de59a8b9b3af1b8db483
Author: Sean Dague <email address hidden>
Date: Mon Dec 15 14:57:15 2014 -0500

    Clean database ubuntu/RHEL/SUSE use uninstall_package and clean /var/lib/mysql

    Change-Id: I72c9df06903e536320a807fae8b817379e448444
    Related-Bug: #1395776