Add output ByteStream to output sequence ATLASRECTS-6130

The multiple stream manager was adding configured ByteStream output streams in the old Gaudi style to "theApp". In multithreaded transforms this means they no longer appear in the AthOutSeq, and thus no output is written. This commit fixes that.

This merge request affects 1 package:

• Database/AthenaPOOL/OutputStreamAthenaPool

This merge request affects 1 file:

• Database/AthenaPOOL/OutputStreamAthenaPool/python/MultipleStreamManager.py

Adding @mnowak ,@ssnyder as watchers

added Database master review-pending-level-1 labels

CI Result SUCCESS (hash 637e3fb8)

	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 30743]

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

merged

mentioned in commit fdcf4e67

added sweep:ignore label