This merge request merges the changes that went into the `21.0` branch between the `release/21.0.92` and `release/21.0.93` tags into the `21.3` branch.

`release/21.0.93` contains the following frozen-tier0-violating merge requests:

 - !20005
 - !20021
 - !20652

MRs in https://gitlab.cern.ch/atlas/athena/tags/nightly/21.0/2019-01-28T2159, accepted since https://gitlab.cern.ch/atlas/athena/tags/nightly/21.0/2019-01-06T2159:

 - !20652: Adding variable HadronConeExclTruthLabelID to heavy-ion jet collections
 - !20005: Propagate xAOD::EventInfo from digitization step onwards
 - !20585: printing timestamp with the full list of arguments in a safe way (ATLINFR-2731)
 - !20607: 21.0 fix nightly test2
 - !20613: Sweeping !20595 from master to 21.0. Bugfix importing tools in RunTier0Test.py
 - !20543: Sweeping !20514 from master to 21.0. Start versioning the CI reference files for the RunTier0Tests
 - !20365: Sweeping !20318 from 21.3 to 21.0. Update art-include in TriggerTest
 - !20364: Sweeping !20324 from 21.3 to 21.0. TriggerTest: add a few tests running on data
 - !20323: Remove non-existing input file from HI build test
 - !20321: update art include for RecExOnline
 - !20262: PreStepPoint quantities in StepHistogramTool
 - !20219: Updates for processing of G4Commands via the G4UImanager
 - !20125: Sweeping !20078 from master to 21.0. Add script to summarise results of locally-ran trigger ART tests
 - !20022: additional plotting option added
 - !20021: Moving eta-phi correction for HIJetRec to calibration area (ATLHI-233 and ATLINFR-2834)
 - !20013: Adds an option to turn on range cuts for gamma processes (conv, phot, compt)
 - !20563: Changed permissions for m16e TCT test
 - !20519: Removed mc16d TCT and replaced with mc16e

The full diff between `release/21.0.93` and `release/21.0.92` is available at https://gitlab.cern.ch/atlas/athena/compare/release/21.0.92...release/21.0.93