I believe this should be cherry-picked back to 5.3.4 branch, Martin, any issues with that?
We are not cherry-picking this to CFME 5.3. It will be available in CFME 5.4 or CF 3.2.
Andrew, has this been added to regular doc?
Verified and able to configure the external UI plugins. However, have some styling issue with the output which is logged in BZ#1229326. Hence moving this issue to verified state. Verified in 5.4.0.5.20150605150206_7daa1a8.
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/RHBA-2015-1100.html
Cancelling the needinfo request on this bug; the doc text has been reviewed and added to the advisory.