Bulk update to reflect scope of Red Hat OpenStack Platform 9 and Red Hat OpenStack Platform does not include this issue (No pm_ack+).
Change is in openstack-manila-ui-2.7.1-0.20170127105750.b67e7e6.el7ost
Using the 2017-03-08.3 puddle, openstack-manila-ui-2.7.1-0.20170214092823.2e2ae51.el7ost.noarch, and the workaround where we tell Horizon to use the v2 Keystone API endpoint instead of the v3 API endpoint, I was able to successfully set the list of enabled share protocols in the Horizon UI as well as verifying the default behavior of listing all known protocols if the list is not specified.
*** Bug 1326119 has been marked as a duplicate of this bug. ***
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://access.redhat.com/errata/RHEA-2017:1245