This change drops the lower-constraints test.
(cherry picked from commit d08dd621c9)
And fixes the pdns4 devstack plugin.
We no longer need to deal with xenial or older distro versions, so we
can assume that we can always install pdns4 from the distro directly
and don't need the distro version check any longer.
Drop a config option that was removed in pdns 4.2.x.
Use mysql credentials correctly.
(cherry picked from commit 6f17fe10bb)
Change-Id: I90af3a092296f943509833608f25522b6f8e9ab6
Depends-On: I36799ee9d4db20104377e2772c86229b8083448d
Signed-off-by: Nicolas Bock <nicolas.bock@canonical.com>
656a26c45c