Add xalan depnendency which is required because wss4j uses the xalan URI toString method. (dragging in all xalan just to get a uri toString seems less than ideal, it has been changed in later wss4j releases, no idea if they work with the rest of the Tuscany Axis2 release and dependencies though

git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@1159205 13f79535-47bb-0310-9956-ffa450edef68

sca-java-2.x/trunk/testing/itest/ws/wspolicy/pom.xml

@@ -55,6 +55,11 @@
            <artifactId>wstx-asl</artifactId>
            <version>3.2.9</version>
         </dependency>
+        <dependency>
+            <groupId>xalan</groupId>
+            <artifactId>xalan</artifactId>
+            <version>2.7.0</version>
+        </dependency>       
     </dependencies>
 
     <build>