TrfTestsART: update conditions tags and introduce ESDMerge test
Manual cherry-pick of MR !46797 (merged) into 22.0-mc20 branch
- Introduce a new ESDMerge_tf regression test
test_trf_esdmerge_serial.sh
- Update the conditionsTag to CONDBR2-BLKPA-RUN2-08 in all data tests