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xAODMetaDataCnv: Use TagInfoMgr to access /TagInfo

Frank Berghaus requested to merge berghaus/athena:xAODMetaDataCnv_use_TagInfoMgr into master

In transforms from RAW the /TagInfo is not available in the input metadata store. The reason is that the RAW format does not as such contain such metadata. To allow access to the /TagInfo to fill the corresponding fields in the xAOD:::FileMetaData use the TagInfoMgr. While the logic of the tool remains the same, using the TagInfoMgr necessitates a near re-write of the tool.

Tested the effects on q221, q431, and raw to all locally observing the expected improvements with no regressions in the metadata content. As some logging from the tool changed and the tool calls TagInfoMgr some log references require updates.

Edited by Frank Berghaus

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