AthenaPoolMultiTest: Fix tests.

Shouldn't explicitly add output streams to the output sequence now. Update reference files.

This merge request affects 1 package:

• AtlasTest/DatabaseTest/AthenaPoolMultiTest

added Test master review-pending-level-1 labels

CI Result SUCCESS

	Athena	AthSimulation
externals
cmake
make
required tests
optional tests

Full details available at NICOS MR-21389-2019-02-24-09-31
Athena: number of compilation errors 0, warnings 0
AthSimulation: number of compilation errors 0, warnings 0
For experts only: Jenkins output [CI-MERGE-REQUEST 34339]

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

merged

mentioned in commit 095f741e

added sweep:ignore label