ctrl: log host/port on errors

In case of multiple ctrl-client entries in .cfg file it's impossible to
see which one is causing particular ctrl error. Fix this by introducing
macro wrapper for stderr logging which always show host:port relevant to
the error.

Change-Id: I788d51359965a66c54075a3971aa7824c3bfb0bf
Related: SYS#2655
1 file changed