Systemd mount role now takes care of creating mount destinations
so there is no reason to handle this manually.
In addition to that, if user/group were not provided explicitly to the
ones set for NFS export, role was failing with permission denied
during re-run
Change-Id: Ib158e14c6f296795bb1f6eabdcfc23b80cbcd871
(cherry picked from commit 0af66c540f)