Add reference bot for Allen

changed the description

Where is a hero emoji when I need one @fsouzade

added RTA label

Mhh, to be honest, I'm not quite convinced. Without also adding a bit more documentation to the twiki I think this will just be more confusing to people, as the refbot won't do what they expect.

Can you elaborate why? (I appreciate I am asking you to educate me how the refbot works at this point)

The refbot only understand the default nightly system. It starts by looking at the results from an lhcb-master-mr slot to determine which builds/tests etc. failed.
Based on that information, it knows how to get the updated reference files from the tests that ran in the ci-test slot.

This will of course also work for Allen, but Allen only has 6 tests in the default nightly system out of which only 1 uses a reference and that ref is pretty minimal.

All the real tests for the Allen project use their own system and are run from the GitLab-ci.

So one might hit the update button, and everything will look green and this might be misleading because in reality one still needs to do the reference update by hand for Allen.

mmm. Still, this feels better than nothing.

Why couldn't the ref-bot learn how to interact with the GitLab-ci? I feel like we should not give up on such a beautiful concept as "Allen can have automatic reference updates" so easily now someone actually showed a willingness to prioritise work on it...

to be clear, this MR is solving the case of !751 (merged), namely, a change in Allen causes a need for a ref update in a downstream project.

The ref updates for Allen's gitlab CI are probably best done slightly differently (perhaps like the lhcb formatting (you get a "curl ..." to run locally)). I discussed briefly with @dcampora who'll make sure it's followed up.

My hope would be that in the new nightly system, Allen tests could be migrated to the common framework and then the refbot will just work.
That sounds more maintainable to me than having to continue to have two different testing strategies.

I would still appreciate a brief explanation about why the gitlab-ci stuff can't be queried automatically like the default nightly system

Allen tests could be migrated to the common framework

I agree, but I don't see this happening soon.

why the gitlab-ci stuff can't be queried automatically like the default nightly system

it can be done

ok I am getting a strong "let's discuss this another time" hint so I'll leave it there but for what it is worth I am in full agreement with @chasse that one testing strategy is the best path