Fix MC21 Zmumu TrigInDetValidation ART jobs
- fix
test_trigID_mu_zmumu_pu40.pyandtest_trigID_mulrt_zmumu_pu40.pyfor MC21 by removing MC15 conditions hack (follow up to !53780 (merged)) - add MC21
Zmumu_pu40file in CVMFS for local testing
test_trigID_mu_zmumu_pu40.py and test_trigID_mulrt_zmumu_pu40.py for MC21 by removing MC15 conditions hack (follow up to !53780 (merged))Zmumu_pu40 file in CVMFS for local testing