tauRec: add art-athena-mt option to MT test

Hello,

This is a follow up of !40577 (merged) where the q221 test was migrated from serial to MT. But aparently we are missing an art-athena-mt option to book multiple cores.

Cheers, Bertrand

This merge request affects 1 package:

• Reconstruction/tauRec

This merge request affects 1 file:

• Reconstruction/tauRec/test/test_tau_q221_multithread.sh

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

added Reconstruction Tau master review-pending-level-1 labels

CI Result SUCCESS (hash d0114eb7)

	Athena	AthSimulation	AthGeneration	AnalysisBase	AthAnalysis
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
AthAnalysis: number of compilation errors 0, warnings 0
For experts only: Jenkins output [CI-MERGE-REQUEST-CC7 28225]

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

merged

mentioned in commit 7e856588

added sweep:ignore label