Fix compatibility with Tempest

Change [1] fixed gates but introduced incompatible code for
scenario tests. So, fix its compatibility for used version of tempest.

[1] Id7d43dee256856062bd0dadad9c469c1500ee36e

Change-Id: I4c3d9df0de6908b82aca787ab124552796cd1066
Closes-Bug: #1555218
diff --git a/manila_tempest_tests/tests/scenario/manager_share.py b/manila_tempest_tests/tests/scenario/manager_share.py
index eb28362..37b346e 100644
--- a/manila_tempest_tests/tests/scenario/manager_share.py
+++ b/manila_tempest_tests/tests/scenario/manager_share.py
@@ -157,10 +157,9 @@
             tenant_id = client.tenant_id
         if not router_id:
             router_id = self._get_router()['id']
-        client.add_router_interface_with_subnet_id(router_id,
-                                                   subnet_id)
-        self.addCleanup(client.remove_router_interface_with_subnet_id,
-                        router_id, subnet_id)
+        client.add_router_interface(router_id, subnet_id=subnet_id)
+        self.addCleanup(
+            client.remove_router_interface, router_id, subnet_id=subnet_id)
 
     def get_remote_client(self, *args, **kwargs):
         if not CONF.share.image_with_share_tools: