Removing deprecated test assertions

git-svn-id: https://svn.apache.org/repos/asf/cxf/fediz/trunk@1563979 13f79535-47bb-0310-9956-ffa450edef68
Some fixes taken from WSS4J for the SamlAssertionValidator

git-svn-id: https://svn.apache.org/repos/asf/cxf/fediz/trunk@1563980 13f79535-47bb-0310-9956-ffa450edef68