Intermediate backup:

Common:
- added grpc_to_json methods
- refined rpc_method_wrapper logging

Compute:
- improved definition and reusability of code in unitary tests
- added loggers for debug purposes

Context:
- added REST methods to dump content of the database in raw text and HTML formatted

Service:
- added many logs for debugging purposes

OFC22 Test:
- corrected scenario definition constants
- deactivated part of the tests for debugging purposes
- exposed Context REST API in a ficed NodePort