Improvements to SimCoreTests ART jobs
Only run regression tests in SimCoreTests ART jobs in the case that the original Athena job succeeded.
Also add a regression test for the test_AtlasG4_TTbarSim_MT.sh
job.
Only run regression tests in SimCoreTests ART jobs in the case that the original Athena job succeeded.
Also add a regression test for the test_AtlasG4_TTbarSim_MT.sh
job.