Add DEP8 tests

Andreas Hasenackrequested to merge
ahasenack/rabbitmq-server:salsa-rabbit-add-dep8 into debian/epoxy

This MR adds some DEP8 tests which we have been using in Ubuntu for a while now. I also added a d/salsa-ci.yml file to enable salsa runs.

Fixes: #1108399

Edited by Andreas Hasenack

Merge request reports