data model: add composition support for data supply

bt5/erp5_wendelin/PortalTypeTemplateItem/portal_types/Data%20Supply.xml

@@ -50,7 +50,7 @@ It is used by Ingestion Policy.</string> </value>
         </item>
         <item>
             <key> <string>type_class</string> </key>
-            <value> <string>Delivery</string> </value>
+            <value> <string>Supply</string> </value>
         </item>
         <item>
             <key> <string>type_interface</string> </key>
@@ -61,7 +61,9 @@ It is used by Ingestion Policy.</string> </value>
         <item>
             <key> <string>type_mixin</string> </key>
             <value>
-              <tuple/>
+              <tuple>
+                <string>CompositionMixin</string>
+              </tuple>
             </value>
         </item>
       </dictionary>