Added missing annotation to WorkFlowService

Fixed incorrect workflow URL reference
Added authentication to test


git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@3685 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

source/java/org/alfresco/service/cmr/workflow/WorkflowService.java

@@ -111,6 +111,7 @@ public interface WorkflowService
      * @param workflowName  workflow name e.g. jbpm://review
      * @return  the deployed workflow definition
      */
+    @Auditable(parameters = {"workflowName"})
     public WorkflowDefinition getDefinitionByName(String workflowName);