Sweeping !42350 from 21.2 to master. Adding Sherpa 2.2.10 and Herwig 7.2.1 MC maps to AT (!42379) · Merge requests · atlas / athena · GitLab

Atlas Nightlybuild requested to merge cherry-pick-793c1ecdd12-master into master Apr 08, 2021

Adding Sherpa 2.2.10 and Herwig 7.2.1 MC maps to AT

See merge request !42350 (merged)