Add some histograms, setup a dummy ReadHandleKey for the offline vertices (!55577) · Merge requests · atlas / athena

Mark Sutton requested to merge sutt/athena:prod into 22.0 Aug 01, 2022

As we added a ReadHandleKey for the offline tracks, so now we add one for the offline vertices. Should also help with ATR-25821.

Also added some histograms for the trigger space point multiplicity vs d0

Add some histograms, setup a dummy ReadHandleKey for the offline vertices