[WFLY-3978] - PicketLink EAP 6.4 Issues

...der element.
Since this, and possibly some of the other error messages (I have not checked), is invoked by an __operation handler__ it should not reference the xml. Booting via xml is only part of the story. People could be adding everything at runtime, so there would be no xml. We are also investigating a filesystem based persistence model instead of xml, so again xml references would not be applicable there.