Watch should take a context.Context

[cedws]

Watch() can be implemented on providers to enable watching configuration for changes.

Watching configuration requires creating a background goroutine since this function is not expected to block forever. However, there is no way to cancel this goroutine since Watch() does not take a context.Context. The goroutine will run for the lifetime of the the program unless aborted via some other mechanism.

[nilsocket]

@knadh Can I take this up?

[knadh]

Since we can't break Watch(), we can add a WatchWithContext() @nilsocket.