Keycloak integration

I couldn't find a list of changes from a vanilla standalone.xml for standalone-test.xml , so, I visually compared and figured out that only logging changes were made. So, the changes on this file are similar: only changes in the logging part. 

If there are changes somewhere else, I can submit a change to apply those as well. Would it be a good idea to keep an text file with instructions on how to build/update this based on a vanilla standalone.xml ?