Modeled after what Debian Salsa CI team uses, see
https://salsa.debian.org/salsa-ci-team/pipeline/raw/master/salsa-ci.yml

Modified a bit to stay under the 4 MB log size limit
and 100 MB artefact limit.

Attempted to get all of Salsa CI working, but ran into failures and was
unable to overcome all of them, so leaving some parts of the pipeline
disabled for now.

Christian Ehrhardt authored Oct 16, 2017 and Ondrej Sury committed Nov 22, 2017

New tests were added along work for but those are still failing on
s390x. To pass dep8, but not skip on unittests entirely this disables
the particular test on s390x.

[1]: https://jira.mariadb.org/browse/MDEV-13412



Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>

Paul Gevers authored Jul 09, 2016 and Otto Kekäläinen committed Jul 09, 2016

Tests based on the ones in MySQL 5.6.