software/osie-coupler/test: adjust test

after 6e8b97ee (Publish IPv6 URL to SlapOs master., 2023-10-02) the
parameters are different

software/osie-coupler/test/test.py

@@ -40,6 +40,5 @@ class OsieTestCase(SlapOSInstanceTestCase):
     return {"mode": 1}
 
   def test(self):
-    connexion_parameters = self.computer_partition.getConnectionParameterDict()
-    self.assertIn('opc_ua_port', connexion_parameters)
-    self.assertIn('interface', connexion_parameters)
+    parameter_dict = self.computer_partition.getConnectionParameterDict()
+    self.assertIn('url-ipv6', parameter_dict)