slapos_subscription_request: Include missing ledger property sheet

   This was missing when creating payment.

master/bt5/slapos_subscription_request/PortalTypePropertySheetTemplateItem/property_sheet_list.xml

@@ -7,6 +7,7 @@
   <item>Person</item>
   <item>Price</item>
   <item>Reference</item>
+  <item>SlapOSLedgerConstraint</item>
   <item>SlapOSSaleProfileConstraint</item>
   <item>SlapOSSubscriptionRequestConstraint</item>
   <item>Task</item>

master/bt5/slapos_subscription_request/PortalTypeTemplateItem/portal_types/Subscription%20Request.xml

@@ -48,6 +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>CredentialRequest</string> </value>

master/bt5/slapos_subscription_request/bt/template_portal_type_property_sheet_list

@@ -5,6 +5,7 @@ Subscription Request | InstanceTree
 Subscription Request | Person
 Subscription Request | Price
 Subscription Request | Reference
+Subscription Request | SlapOSLedgerConstraint
 Subscription Request | SlapOSSaleProfileConstraint
 Subscription Request | SlapOSSubscriptionRequestConstraint
 Subscription Request | Task