slapos_accounting: allow using open order for different kind of item

master/bt5/slapos_accounting/PropertySheetTemplateItem/portal_property_sheets/SlapOSAccountingOpenSaleOrderLineConstraint/aggregate_instance_tree_existence_constraint.xml

@@ -28,7 +28,7 @@
         </item>
         <item>
             <key> <string>constraint_portal_type</string> </key>
-            <value> <string>python: (\'Instance Tree\',)</string> </value>
+            <value> <string>python: (\'Instance Tree\', \'Compute Node\', \'Project\')</string> </value>
         </item>
         <item>
             <key> <string>description</string> </key>