CI download to check for grid input LHEs with mc21_13p6TeV scope
In !1824 (merged) I hit the problem, that Grid input LHEs are always trying to be downloaded with mc15_13TeV or mc16_13TeV scope, I think the origin of this is here: https://gitlab.cern.ch/atlas-physics/pmg/mcjoboptions/-/blob/master/scripts/run_athena.sh#L115-138
First, it would probably be preferable, if we get the CME string from the CME value rather than fixing it to 13 TeV. Second, we now also need to allow mc21 As shortest patch we could just keep extending the list of allowed scopes, here mc21_13p6TeV being the obvious one to add immediately.
Many thanks, Jan