Revisit how tests are setup

[tjmadonna]

This would apply to ingest-api as well. The json files with the test configurations have become cumbersome to update when new features are added.

[tjmadonna]

One possible solution is to use docker-compose to create a temporary neo4j database inside docker. This way we wouldn't have to mock all the database calls. We would still need to mock UBKG and calls to other microservices, but it would cut down on the number of mocks.