Ophys cells table now supports passed_only filter

[aamster]

Addresses #2242

The issue was that ophys cells table did not filter by passed only, so it was returning more experiments than in the ophys experiments table.

• Adds passed_only arg to BehaviorProjectLimsApi class constructor rather than in instance methods since passed_only applies to all table the class returns
• ophys_cells_table now supports passed_only flag
• cleans up logic to filter by passed only in sql rather than in python
• only pulls session type from pkl file, not from DB, in order to cleanup logic

Testing Tested manually to confirm that experiments marked as failed are now excluded when passed_only=True

Note: updating old tests with new ones since updating the old tests would be harder than writing new ones

[aamster]

Need to merge this to avoid merge conflicts. I have addressed your feedback to maintain automated tests on these methods