PCT-985 InnoDB Stats are not re-enabled after MySQL restart

I personally don't like it. I don't think you should write to restartMonChan. It's not even obvious this is restartMonChan. It's my fault I made it bidirectional. I would personally fix that:

https://github.com/percona/percona-agent/blob/release/mrms/monitor/subscribers.go#L40
s/c chan bool/<-chan bool/