[debian-mysql] Bug#863675: Bug#863675: libmariadbd-dev: fails to upgrade from 'sid' - trying to overwrite /usr/bin/mysql_config

[Otto Kekäläinen]

I made this extension to the gitlab-ci.yml file to be able to
automatically test for issues like this in the future:
https://salsa.debian.org/mariadb-team/mariadb-10.3/commit/0ec004b4e4fc7c98a7b16cbe1a821be12ace1110

Ideally it would actually also attempt to build something first with
MySQL and then with MariaDB and verify it actually works, but I don't
know any good example to do it with.