Add an ART test for qball digitization

After ATLASSIM-4225 it is clear that the stability of qball digitization output
needs to be monitored to confirm that the issues seen in 21.0 do not appear in
other branches.

Simulation/Tests/DigitizationTests/test/test_Digi_tf_mc16a_qballs.sh

+#!/bin/sh
+#
+# art-description: Run digitization of an MC16a qball sample with 2016a geometry and conditions, 25ns pile-up
+# art-type: grid
+# art-include: 21.0/Athena
+# art-include: 21.3/Athena
+# art-include: 21.9/Athena
+# art-include: master/Athena
+# art-output: mc16a_qball.RDO.pool.root
+
+DigiOutFileName="mc16a_qball.RDO.pool.root"
+
+HighPtMinbiasHitsFiles="/cvmfs/atlas-nightlies.cern.ch/repo/data/data-art/Tier0ChainTests/mc16_13TeV.361239.Pythia8EvtGen_A3NNPDF23LO_minbias_inelastic_high.merge.HITS.e4981_s3087_s3089/*"
+LowPtMinbiasHitsFiles="/cvmfs/atlas-nightlies.cern.ch/repo/data/data-art/Tier0ChainTests/mc16_13TeV.361238.Pythia8EvtGen_A3NNPDF23LO_minbias_inelastic_low.merge.HITS.e4981_s3087_s3089/*"
+
+
+Digi_tf.py \
+--inputHITSFile /cvmfs/atlas-nightlies.cern.ch/repo/data/data-art/DigitizationTests/DigitizationTests/QBALLS.HITS.17587614._000019.pool.root.1 \
+--conditionsTag default:OFLCOND-MC16-SDR-16 \
+--digiSeedOffset1 170 \
+--digiSeedOffset2 170 \
+--geometryVersion default:ATLAS-R2-2016-01-00-01 \
+--inputHighPtMinbiasHitsFile ${HighPtMinbiasHitsFiles} \
+--inputLowPtMinbiasHitsFile ${LowPtMinbiasHitsFiles} \
+--jobNumber 1 \
+--maxEvents 10 \
+--numberOfCavernBkg 0 \
+--numberOfHighPtMinBias 0.116075313 \
+--numberOfLowPtMinBias 44.3839246425 \
+--outputRDOFile ${DigiOutFileName} \
+--digiSteeringConf "StandardSignalOnlyTruth" \
+--postExec 'all:CfgMgr.MessageSvc().setError+=["HepMcParticleLink"]' 'ToolSvc.LArAutoCorrTotalToolDefault.deltaBunch=1' \
+--postInclude 'default:PyJobTransforms/UseFrontier.py' \
+--pileupFinalBunch 6 \
+--preExec 'all:from AthenaCommon.BeamFlags import jobproperties;jobproperties.Beam.numberOfCollisions.set_Value_and_Lock(20.0);from LArROD.LArRODFlags import larRODFlags;larRODFlags.NumberOfCollisions.set_Value_and_Lock(20);larRODFlags.nSamples.set_Value_and_Lock(4);larRODFlags.doOFCPileupOptimization.set_Value_and_Lock(True);larRODFlags.firstSample.set_Value_and_Lock(0);larRODFlags.useHighestGainAutoCorr.set_Value_and_Lock(True)' \
+--preInclude 'HITtoRDO:Digitization/ForceUseOfPileUpTools.py,SimulationJobOptions/preInclude.PileUpBunchTrainsMC15_2015_25ns_Config1.py,RunDependentSimData/configLumi_run284500_mc16a.py' \
+--skipEvents 0
+echo  "art-result: $? Digi_tf.py"
+
+ArtPackage=$1
+ArtJobName=$2
+
+
+art.py compare grid --entries 10 ${ArtPackage} ${ArtJobName} --mode=summary
+echo  "art-result: $? art-compare"