Automatically identify product names in index from test config

[whatnick]

Expected behaviour

Testing should have a single point of truth to allow creation of new process configurations and tests. This should be the datacube-wps-config.yaml file.

Actual behaviour

Currently products needing to be indexed for tests need to added twice.

• In the yaml config above
• In the setup_db.sh script

Making it better

Use a test fixture to identify the needed products during test start up and add them to the database from the canonical product manifest, currently dea-config in the future a global / publicly available STAC Catalog