erp5_payroll_l10n_fr: forces creation of id generator in tests

bt5/erp5_payroll_l10n_fr/TestTemplateItem/portal_components/test.erp5.testDSNSocialDeclarationReport.py

@@ -53,6 +53,8 @@ class TestDSNSocialDeclarationReport(ERP5TypeTestCase):
     self.portal = self.getPortalObject()
     self.dsn_module = self.portal.getDefaultModuleValue("DSN Monthly Report")
     self.pinDateTime(DateTime(2015, 12, 01))
+    # Create the id_group 'dsn_event_counter'
+    self.portal.portal_ids.generateNewId(id_group='dsn_event_counter', id_generator='continuous_integer_increasing')
 
   def beforeTearDown(self):
     self.unpinDateTime()