systemd: fix immediate unmount of mountpoints not in fstab
Systemd 219 immediately unmounts any mounts which don't exist
in fstab. See FDo bug #89383:
https://bugs.freedesktop.org/show_bug.cgi?id=89383
Patch from Fedora:
http://pkgs.fedoraproject.org/cgit/systemd.git/commit/?h=f22&id=
9bbe0e92dc59d5a42258c729b105a7d9901eb35e
(From OE-Core rev:
a708514a58fd609b7f8c1a4bd4ab35902681f59b)
Signed-off-by: Joshua Lock <joshua.lock@collabora.co.uk>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
