Backported: https://github.com/ManageIQ/manageiq/pull/10356
I verified the fix is in the code. The customer has verified that the proxy issue has disappeared. Moving to verified per discussions above.
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://rhn.redhat.com/errata/RHSA-2016-1996.html