release/21.2.30.0

James Catmore

@jcatmore

957ada4a · Merge branch '21.2-removeHIARTTests' into '21.2' · May 12, 2018

AthDerivation-21.2.30.0 - second cache for 2018 open ended production and all other data/MC for release 21. Fixes a per-mille crash in flavour tagging: ATLASG-1430