Sweeping !20514 from master to 21.0. Start versioning the CI reference files for the RunTier0Tests (!20543) · Merge requests · atlas / athena · GitLab

Atlas Nightlybuild requested to merge cherry-pick-7c40e9d89f-21.0 into 21.0 Jan 23, 2019

Start versioning the CI reference files for the RunTier0Tests

See merge request !20514 (merged)