fix ART test and README after UTT chain renaming (!54158) · Merge requests · atlas / athena · GitLab

Stefanie Morgenstern requested to merge shanisch/athena:ATR-25417_UTTART into 22.0 Jun 10, 2022

recent renaming of the UTT chains (!53233 (merged)) necessitates

fix for test_trigID_fslrt_rhadron.py
update UTT README

ATR-25417, ATR-25693