TrigP1Test: Add test to emulate running with preloaded data at P1
Changes related to testing the HLT in ART with a configuration that emulates running in a partition at P1 (ATR-19174):
- Replace the existing
trigbs_replaceLB.py
script with a more generaltrigbs_modifyEvent.py
that can modify lumiblock, run number and event timestamp of a RAW event. - Add ART test to emulate running in a partition with preloaded data.