slapos_erp5: init preferences in test

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

@@ -96,6 +96,13 @@ class TestSlapOSVirtualMasterScenario(TestSlapOSVirtualMasterScenarioMixin):
   def test_virtual_master_without_accounting_scenario(self):
     self.web_site = self.portal.web_site_module.slapos_master_panel
     # some preparation
+    preference = self.portal.portal_preferences.slapos_default_system_preference
+    preference.edit(
+      preferred_subscription_assignment_category_list=[
+        'function/customer',
+        'role/client',
+      ]
+    )
 
     ################################################################
     # lets join as slapos accountant, which will manages currencies
@@ -240,6 +247,7 @@ class TestSlapOSVirtualMasterScenario(TestSlapOSVirtualMasterScenarioMixin):
     self.tic()
     self.logout()
     self.login()
+
     self.checkServiceSubscriptionRequest(public_server)
 
     # join as the another visitor and request software instance on public