AthenaPoolCnvSvc: Fix test failures in clang build.

Tweak ignore patterns to avoid failues in clang build.

This merge request affects 1 package:

• Database/AthenaPOOL/AthenaPoolCnvSvc

This merge request affects 1 file:

• Database/AthenaPOOL/AthenaPoolCnvSvc/CMakeLists.txt

Adding @mnowak ,@ssnyder as watchers

added Database master review-pending-level-1 labels

CI Result SUCCESS (hash 45114f27)

	Athena	AthSimulation	AthGeneration	AnalysisBase	AthAnalysis	DetCommon
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
DetCommon: number of compilation errors 0, warnings 0
For experts only: Jenkins output [CI-MERGE-REQUEST-CC7 31126]

Hi, everything looks fine from my L1 side. Approving...
Cheers, Francisco --L1

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

merged

mentioned in commit 7bd6221e

added sweep:ignore label