Add new MC mc20e test using AFP Hits.
Adds new ART tests that is identical to existing mc20e test without pileup, except we use a new HITS file with the AFP detector.
GitLab jobs artifacts no longer stored forever as of Monday, November 4th 08:30h. Further information under https://cern.ch/otg0152576
Adds new ART tests that is identical to existing mc20e test without pileup, except we use a new HITS file with the AFP detector.