Feature Description

We are hoping to add a little more visibility to the binlog watcher. Particularly, we want to add log statements when the binlog watcher begins streaming and when it closes.

We also hope to add logging to where the VStreamer engine locks and unlocks. Please see the PR for implementation.

Use Case(s)

We added these log statements to our downstream Vitess fork so that we can more accurately triage any vttablet outages that may occur.