userdata attribute has a typo: https://github.com/gophercloud/gophercloud/blob/a87527328216a750678e3bc100b8c0e4cd607667/openstack/compute/v2/extensions/extendedserverattributes/results.go#L43 https://github.com/openstack/nova/blob/72224775fb6a2eda0ceec51dfcb971fc50d4ea02/nova/api/openstack/compute/views/servers.py#L325