Improve discovery URL creation

[csc-felipe]

Proposed solution

Discovery URL is dependent on which integrations and workflow is being used.
Perhaps after having a well-defined specification for workflows we are able to create proper discovery URLs for each workflow and use case.

metadata-submitter/metadata_backend/api/handlers/submission.py

Line 23 in a4951fe

def _make_discovery_url(self, obj_data: Dict) -> str:

DoD (Definition of Done)

Each workflow and setup / deployment configuration should generate correct discovery URLs.

Testing

[csc-felipe]

There seems to be other 2 duplicate issues. #586, and #512