Fix invalid original_name key in flavor check

In test_server_connectivity_resize, original_name is not the key
in flavor info, name should be used instead.

Change-Id: I56a3e2e7c6ccdf03f69b66719c691b65953b6140
diff --git a/tempest/scenario/test_network_advanced_server_ops.py b/tempest/scenario/test_network_advanced_server_ops.py
index b2d401b..7512bff 100644
--- a/tempest/scenario/test_network_advanced_server_ops.py
+++ b/tempest/scenario/test_network_advanced_server_ops.py
@@ -200,7 +200,8 @@
             self.assertEqual(resize_flavor, server['flavor']['id'])
         else:
             flavor = self.flavors_client.show_flavor(resize_flavor)['flavor']
-            for key in ['original_name', 'ram', 'vcpus', 'disk']:
+            self.assertEqual(flavor['name'], server['original_name'])
+            for key in ['ram', 'vcpus', 'disk']:
                 self.assertEqual(flavor[key], server['flavor'][key])
         self._wait_server_status_and_check_network_connectivity(
             server, keypair, floating_ip)