slapos_pdm: Upgrade Decision is from Ticket group

   The upgrade decision portal type should be return whenever getPortalTicketTypeList() is called.

   This aims to fix Worklists for Events when they follow up to an Upgrade Decision.

master/bt5/slapos_pdm/PortalTypeTemplateItem/portal_types/Upgrade%20Decision.xml

@@ -25,7 +25,9 @@
         <item>
             <key> <string>group_list</string> </key>
             <value>
-              <tuple/>
+              <tuple>
+                <string>ticket</string>
+              </tuple>
             </value>
         </item>
         <item>
@@ -46,6 +48,12 @@
             <key> <string>portal_type</string> </key>
             <value> <string>Base Type</string> </value>
         </item>
+        <item>
+            <key> <string>short_title</string> </key>
+            <value>
+              <none/>
+            </value>
+        </item>
         <item>
             <key> <string>type_class</string> </key>
             <value> <string>Ticket</string> </value>