erp5_trade: transition should guarded

bt5/erp5_trade/WorkflowTemplateItem/portal_workflow/packing_list_workflow/transitions/plan.xml

@@ -33,7 +33,7 @@
         <item>
             <key> <string>guard</string> </key>
             <value>
-              <none/>
+              <persistent> <string encoding="base64">AAAAAAAAAAI=</string> </persistent>
             </value>
         </item>
         <item>
@@ -59,4 +59,21 @@
       </dictionary>
     </pickle>
   </record>
+  <record id="2" aka="AAAAAAAAAAI=">
+    <pickle>
+      <global name="Guard" module="Products.DCWorkflow.Guard"/>
+    </pickle>
+    <pickle>
+      <dictionary>
+        <item>
+            <key> <string>permissions</string> </key>
+            <value>
+              <tuple>
+                <string>Modify portal content</string>
+              </tuple>
+            </value>
+        </item>
+      </dictionary>
+    </pickle>
+  </record>
 </ZopeData>