After pull request #5299 was merged DatasetsIT.testPrivateUrl started failing. Here's a screenshot: <img width="1421" alt="screen shot 2018-12-13 at 6 34 38 pm" src="https://user-images.githubusercontent.com/21006/49974107-cfbd2900-ff05-11e8-84be-d0cdd1b99518.png"> https://build.hmdc.harvard.edu:8443/job/phoenix.dataverse.org-apitest-develop/306/edu.harvard.iq$dataverse/testReport/edu.harvard.iq.dataverse.api/DatasetsIT/testPrivateUrl/
