Metadata processing: Add file ID, characterization

refs #6575

Metadata files should have identification and characterization information in the METS file. Add those microservices to metadata processing. Update processing config to reflect this. Fix a couple microservice group discontinuities.
Don't think this will actually work - `087d27be-c719-47d8-9bbb-9a7d8b609c44` is the UUID of the submission doc ID MSCL, while you added the new `b2444a6e-c626-4487-9abc-1556dd89a8ae` for metadata.