Sweeping !21326 from 21.3 to master. Fixes for Trigger TrigAnalysisTest BS ART tests

Fixes for Trigger TrigAnalysisTest BS ART tests

See merge request !21326 (merged)

Adding original author @hartj as watcher.

This merge request affects 2 packages:

• Control/CxxUtils
• Trigger/TrigValidation/TrigAnalysisTest

Adding @ssnyder ,@rbianchi as watchers

added Core Trigger master review-pending-level-1 labels

CI Result SUCCESS

	Athena	AthSimulation
externals
cmake
make
required tests
optional tests

Full details available at NICOS MR-21373-2019-02-23-09-32
Athena: number of compilation errors 0, warnings 2
AthSimulation: number of compilation errors 0, warnings 0
For experts only: Jenkins output [CI-MERGE-REQUEST 34306]

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

merged

mentioned in commit e5a710b1

added sweep:ignore label