Basic tests for supported CA-based ISF simulators part 1 (FullG4MT_QS, PassBackG4MT, ATLFASTIIMT)
The output of jobs using the CA-based configuration for FullG4MT_QS, PassBackG4MT and ATLFASTIIMT
now matches the output of jobs using the old-style configuration. (Even though far fewer conditions folders are loaded.)
Tests have been added for ATLFASTIIF_G4MS, ATLFAST3MT and ATLFAST3MT_QS, but these have not been activated yet.
This MR should go in after !46575 (merged) and !46808 (merged).