Small refactor of unit tests to consolidate language and add a query and check helper to test_ingestion.py

[jparismorgan]

What

• Changes naming from query_vectors to queries to match what ingest() calls it
• Adds a helper to test_ingestion.py which queries and checks for equality

Testing

• Unit tests pass

Note

Let me know if you would like us to name everything query_vectors instead of queries, I don't mind either way, but seems nice to pick one for public facing code.

TODO

Would be also nice to consolidate language (i.e. query_vectors vs queries) in the .ipynb's - will ask offline about how to propagate those changes to cloud, and also will do those updates in a separate PR.