Add unit tests for the ByteStreamMetadataTool

Test the functionality of the ByteStreamMetadataTool. The tool should:

• do nothing for empty input
• copy a ByteStreamMetadata object from input into a container in output the MetaDataStore
• copy a ByteStreamMetadataContainer from input to output

Should there already be content in the output:

• objects matching what is already in the MetaDataStore should be ignored
• new content should be appended to the existing container

This merge request affects 2 packages:

• Event/ByteStreamCnvSvc
• Event/ByteStreamData

Affected files list will not be printed in this case

Adding @tadej as watcher

added EDM JetEtmiss master review-pending-level-1 labels

CI Result SUCCESS (hash 4f6d7b7d)

	Athena	AthSimulation	AthGeneration	AnalysisBase
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
For experts only: Jenkins output [CI-MERGE-REQUEST-CC7 24763]

Aside from an unimportant typo this looks good to me so approving. Tom - L1 shifter

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

resolved all threads

merged

mentioned in commit 66271500

added sweep:ignore label