As pointed out in the last 2 comments, this RFE matches the title and is not planned for OSP11. Further the upstream gerrits were all merged and part of general OSP10 manila CephFS prerequisites, I cleared those and set the bug back to NEW.
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-2018:2086