Make the individual tutorials runnable through Maven

The EJB3 tutorials currently can be built and run through Ant and Maven. However Maven support is not that great and currently works as follows:

1) An aggregator (jboss-ejb3-tutorial-parent) first triggers the AS to start (through a "init" module)
2) All the tutorials are then run one after other
3) The aggregator then finally uses a "shutdown" module to stop the server.

This doesn't allow a single tutorial to be run through Maven, because the AS is started outside the tutorial.

To fix this, maven profile(s) need to be created. Ex: A "RunAllTutorial" profile which does the same steps as above and a "RunOneTutorial" which is responsible for running the single tutorial (with the additional steps of starting/stopping the AS).