deltaspike.testcontrol.stop_container should stop the container after all tests executed

deltaspike.testcontrol.stop_container is very useful to speed up test cases. However, it results that the container does not getting shutdown at all. This should still be done after ALL the tests have been executed.

With Gradle the current behavior is quite a problem. The Gradle Wrappers keep by default the VM running. And as such, test cases must properly cleanup and free resources. Otherwise the Gradle wrapper consumes more and more memory and dies at some point.