There are no issue with using ubuntu-bionic now, so stop gating on
ubuntu-xenial.
Change-Id: I5c4cac0d2366a3708f325bffef082ec37d504a8e
Depends-On: https://review.openstack.org/623074
Signed-off-by: Paul Belanger <pabelanger@redhat.com>
This allows us to gate properly with windmill-jobs.
Change-Id: I23a072da89791666bc711d785344ba88d206710c
Signed-off-by: Paul Belanger <pabelanger@redhat.com>