Sweeping !20320 from 21.3 to 21.9. Large merge to import TrigInDetAnalysis changes from final 21.1-dev to 21.3 (!20382) · Merge requests · atlas / athena · GitLab

Atlas Nightlybuild requested to merge cherry-pick-36c55b6be0-21.9 into 21.9 Jan 16, 2019

Large merge to import TrigInDetAnalysis changes from final 21.1-dev to 21.3

See merge request !20320 (merged)