tauRec: thinning of CaloCalTopoClusters_links for tau clusters

Hello,

This MR adds the functionality to thin the CaloCalTopoClusters_links container and only keep the entries associated with tau clusters. This container is needed for the tau cluster-to-cell navigation in xAODs, but it is too large to be written out without thinning. As discussed in ATLTAU-1733, the CaloClusterCellLinkContainer thinning was not supported so far, and Scott just implemented it (not merged yet). Once it's in Athena, the CaloCalTopoClusters_links size should be reduced significantly (I'm already adding the container to the xAOD output to minimise the number of MRs, so we expect a jump in xAOD size, ATLASRECTS-5684). According to q221 run on 40 events, thinning reduces the container size by a factor of 2.5 (3.0 kb/evt after thinning).

Cheers, Bertrand

added Calorimeter Reconstruction Tau master labels

This merge request affects 4 files:

• Calorimeter/CaloExample/CaloRecEx/share/CaloRecOutputItemList_jobOptions.py
• Reconstruction/RecExample/RecExCommon/share/RecExCommon_topOptions.py
• Reconstruction/tauRec/src/TauCellThinningAlg.cxx
• Reconstruction/tauRec/tauRec/TauCellThinningAlg.h

Adding @goetz ,@martindl ,@adbailey ,@pavol ,@xiaozhon as watchers

added JetEtmiss review-pending-level-1 labels

Tagging @christos , @ssnyder , @cgrefe , @qbuat for information.

changed the description

CI Result SUCCESS (hash fc99c7cc)

	Athena	AthSimulation	AthGeneration	AnalysisBase
externals
cmake
make
required tests
optional tests

Full details available on this CI monitor view
Athena: number of compilation errors 0, warnings 0
AthSimulation: number of compilation errors 0, warnings 0
AthGeneration: number of compilation errors 0, warnings 0
AnalysisBase: number of compilation errors 0, warnings 0
For experts only: Jenkins output [CI-MERGE-REQUEST-CC7 22776]

added review-approved label and removed review-pending-level-1 label

merged

mentioned in commit 2d113550

added sweep:ignore label