Some minor clean ups for multi threading

added full-unit-tests label

This merge request affects 2 packages:

• Database/AthenaPOOL/AthenaPoolCnvSvc
• Database/AthenaPOOL/PoolSvc

Adding @ssnyder ,@mnowak as watchers

added Database master review-pending-level-1 labels

CI Result SUCCESS (hash b08a2058)

	Athena	AthSimulation
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
For experts only: Jenkins output [CI-MERGE-REQUEST-CC7 10209]

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

merged

mentioned in commit f85f7633

added sweep:ignore label