Include PID in JMX tree for the running process

If possible we should list the PID

[10:43:51] <jstrachan> davsclaus if you wanna tinker, JvmConnectionWrapper.toString() is the fella
[10:43:58] <davsclaus> k
[10:44:01] <jstrachan> e.g. add getName() + "[" + vm.getPid() + "]"