Faster ci for branch/merge/master branch
due to the size of the artifacts (> 650Mo) doing a clear staging on the UI is a pain (passing artifacts takes a long time to download/unzip and cache mechanism doesn't scale well if we allow multiple concurrent run)
The current solution is to propose one big job that does everything needed for a given event
- branch other than master: test only
- merge request: test, package (linux only ) and update site
- master branch: build, test, package, update site and deployment as nightly on http://atsyra2.irisa.fr