[watermill-nats] Watermill command bus cannot recover from "stan: connection closed" on Stan restart

[zdraganov]

Used in Kubernetes environment have to reschedule the Stan pod, which changed the underlying IP address which it used. After that the command bus was constantly throwing "sending message failed: stan: connection closed" error even if the pod has successfully rescheduled.

I've checked the Publisher class in the package here https://github.com/ThreeDotsLabs/watermill-nats/blob/master/pkg/nats/publisher.go#L84-L108

In my scenario the app connects to the Stan service via DNS (Kubernetes service).