Add the possibility of running OpenEJB in debug mode with suspend=n

the debug string in org.apache.openejb.config.RemoteServer is hardcoded:

"-Xrunjdwp:transport=dt_socket,server=y,suspend=y,address="

It would be nice if at least suspend=y would be customizable. Otherwise when you run mvn tomee:debug you have to wait until the server is listening on port 5005, and then attach the remote debugger to continue the startup process. This results in a waste of time.