print contextpath and option to sleep after starting the @Deployment

Most graphene unit test have a @Deployment section and something similar to the following:

    @ArquillianResource
    private URL contextPath;

When debugging the Server for finding the bug in the webapp it's often needed to manually click through the application and invoke requests directly. But to do that you need the contextpath! It would be nice if Arquillian Graphene would log this information.

Another highly useful feature would be to stop the test after a @Deployment via a -D java option. Currently I need to add a Thread.sleep(600000L) to my test manually if I like to test the server. If I don't do that Selenium aborts the test with a failure after 30s if I'm debugging the server.