Stop using Fake pubsub in tests; use real pubsub.

[chrisdostert]

💥 Proposal

Opctl is a distributed, event driven architecture. We currently fake/mock pubsub in tests wherever it's a dependency. The proposal here is to stop faking/mocking it and instead use the real thing.

This will give us better tests that match real world behavior, not fake mocked out behavior.

See this example of where/how we fake it.