CTA read support for non-native tape formats (OSM/dCache and Enstore)

• Jorge and Jacek agreed on having a unit-test that replicates the error found on cleaner session. To be provided by Jacek.
• A possible solution is to have an MHVTL tape formatted the same way as dCache tape, that allows the error to be replicated.

cta-frontend-grpc integration for CTA

• Michael will be working on refactoring the code of both SSI and Grpc implementations, so that there is no duplication of functionality (this making a future transition to Grpc easier).