Pass message-seq options along [IMMUTANT-371]
Add util function for looking up the hornetq remoting port.
Run integs in an offset AS.

By default, integs now run in an AS that is port offset by 100. If
-Dlazy is passed, the port offset won't be applied, and it will try to
connect to a running AS.

Any tests that used hardcoded ports have been adjusted to look them up
instead.