Comment 4 for bug 1729261

So it seems the dashboard is lacking the ability to handle the chunked response it receives from the API. Compare this function that is being used in the python client

https://github.com/openstack/python-designateclient/blob/master/designateclient/v2/utils.py#L57

vs. the simplistic function in the dashboard

https://git.openstack.org/cgit/openstack/designate-dashboard/tree/designatedashboard/static/designatedashboard/resources/os-designate-recordset/api.service.js#n64