Add confluent_kafka to ap_association so that alerts can be sent to the alert stream when doProduceAlerts is set. Additionally, update the write alerts function to only write when doWriteAlerts is set. Add unit tests to test the new functionality.

The schema is f32, so we have to use that in the test data to make it
round trip.
The assert in the test itself needs to be exact equality.

Moved functions in unit tests and cleaned up packageAlerts.