slapos_subscription_request: Dont set quantity 0 but price

   Else simulation behaves oddly.

master/bt5/slapos_subscription_request/SkinTemplateItem/portal_skins/slapos_subscription_request/SubscriptionRequestModule_requestSubscriptionProxy.py

@@ -60,12 +60,11 @@ subscription_request = context.subscription_request_module.newContent(
 
 subscription_request.setDefaultEmailText(email)
 
-def wrapWithShadow(subscription_request, amount, subscription_reference,
+def wrapWithShadow(subscription_request, subscription_reference,
                    subscription_request_id, contract=contract):
   subscription_request.activate(tag="subscription_condition_%s" % subscription_request_id
                              ).SubscriptionRequest_applyCondition(subscription_reference, target_language)
   return subscription_request.SubscriptionRequest_requestPaymentTransaction(
-    amount=amount,
     tag="subscription_%s" % subscription_request_id,
     target_language=target_language,
     contract=contract
@@ -74,7 +73,7 @@ def wrapWithShadow(subscription_request, amount, subscription_reference,
 payment = person.Person_restrictMethodAsShadowUser(
   shadow_document=person,
   callable_object=wrapWithShadow,
-  argument_list=[subscription_request, user_input_dict["amount"],
+  argument_list=[subscription_request, 
                  subscription_reference, subscription_request.getId(),
                  contract])
 

master/bt5/slapos_subscription_request/SkinTemplateItem/portal_skins/slapos_subscription_request/SubscriptionRequest_createRelatedSaleInvoiceTransaction.py

@@ -25,7 +25,10 @@ if current_invoice is None:
         start_date=payment_transaction.getStartDate(),
         stop_date=payment_transaction.getStopDate(),
       )
-  current_invoice["1"].setQuantity(amount)
+  if not amount:
+    # this is supposed to be free, so turn price free.
+    current_invoice["1"].setPrice(0.0)
+  current_invoice["1"].setQuantity(context.getQuantity())
 
   comment = "Validation invoice for subscription request %s" % context.getRelativeUrl()
   current_invoice.plan(comment=comment)

master/bt5/slapos_subscription_request/SkinTemplateItem/portal_skins/slapos_subscription_request/SubscriptionRequest_requestPaymentTransaction.py

@@ -23,6 +23,7 @@ if current_invoice is None:
         stop_date=DateTime()
       )
 
+  amount = context.getQuantity()
   if context.SubscriptionRequest_testSkippedReservationFree(contract):
     # Reservation is Free
     amount = 0

master/bt5/slapos_subscription_request/SkinTemplateItem/portal_skins/slapos_subscription_request/SubscriptionRequest_requestPaymentTransaction.xml

@@ -50,7 +50,7 @@
         </item>
         <item>
             <key> <string>_params</string> </key>
-            <value> <string>amount, tag, target_language, contract=None, REQUEST=None</string> </value>
+            <value> <string>tag, target_language, contract=None, REQUEST=None</string> </value>
         </item>
         <item>
             <key> <string>_proxy_roles</string> </key>

master/bt5/slapos_subscription_request/TestTemplateItem/portal_components/test.erp5.testSlapOSSubscriptionScenario.py

@@ -715,17 +715,16 @@ return dict(vads_url_already_registered="%s/already_registered" % (payment_trans
         expected_reservation_tax = self.expected_reservation_tax
         expected_reservation_fee = self.expected_reservation_fee
 
-
       self.assertEqual(invoice.getSimulationState(), "stopped")
       self.assertEqual(invoice.getCausalityState(), "solved")
       self.assertEqual(invoice.getPriceCurrency(),
         subscription_request.getPriceCurrency())
       for line in invoice.objectValues():
         if line.getResource() == "service_module/slapos_reservation_fee":
+          self.assertEqual(line.getQuantity(), quantity)
           if self.expected_free_reservation:
-            self.assertEqual(line.getQuantity(), 0)
+            self.assertEqual(round(line.getPrice(), 2),  0.0)
           else:
-            self.assertEqual(line.getQuantity(), quantity)
             self.assertEqual(round(line.getPrice(), 2),  expected_reservation_fee_without_tax)
         if line.getResource() == "service_module/slapos_tax":
           self.assertEqual(round(line.getQuantity(), 2),