MODE-1765 - Updated the AS7 distributions

For integration-testing purposes, there is an updated version of the standard AS7 distribution which overwrites the configuration file and which adds additional test resources.

The default AS7 distribution has been "cleaned up" and is now tested only during the "assembly" phase via a separate Maven module, _integration/modeshape-jbossas-kit-tests_.

This pull request should be merged into 3.1.x and cherry picked into master.