slapos_erp5: test: stabilize discount/invoice period

master/bt5/slapos_erp5/TestTemplateItem/portal_components/test.erp5.testSlapOSERP5VirtualMasterScenario.py

@@ -479,6 +479,7 @@ class TestSlapOSVirtualMasterScenario(TestSlapOSVirtualMasterScenarioMixin):
 
 
   def test_virtual_master_with_accounting_scenario(self):
+    with PinnedDateTime(self, DateTime('2024/02/17')):
       currency, _, _, sale_person = self.bootstrapVirtualMasterTest()
 
       self.logout()
@@ -597,6 +598,7 @@ class TestSlapOSVirtualMasterScenario(TestSlapOSVirtualMasterScenarioMixin):
       payment_transaction = public_person.Person_addDepositPayment(99*10, currency.getRelativeUrl(), 1)
       payment_transaction.PaymentTransaction_acceptDepositPayment()
 
+    with PinnedDateTime(self, DateTime('2024/02/17 01:01')):
       public_instance_title = 'Public title %s' % self.generateNewId()
       self.checkInstanceAllocation(public_person.getUserId(),
           public_reference, public_instance_title,