Fix: database migration
created_at of NSR exists already
@@ -2,7 +2,6 @@ ALTER TABLE network_service_descriptor ADD created_at varchar(255);
ALTER TABLE network_service_descriptor ADD updated_at varchar(255);
ALTER TABLE virtual_network_function_descriptor ADD created_at varchar(255);
ALTER TABLE virtual_network_function_descriptor ADD updated_at varchar(255);
-ALTER TABLE network_service_record ADD created_at varchar(255);
ALTER TABLE network_service_record ADD updated_at varchar(255);
ALTER TABLE virtual_network_function_record ADD created_at varchar(255);
ALTER TABLE virtual_network_function_record ADD updated_at varchar(255);
