D23694: Add support for sshfs to the fstab backend

[Kai Uwe Broulik]

broulik added a reviewer: KDE Connect.

REPOSITORY
  R245 Solid

REVISION DETAIL
  https://phabricator.kde.org/D23694

To: lbeltrame, bruns, broulik, fvogt, #kde_connect
Cc: kde-frameworks-devel, LeGast00n, GB_2, michaelh, ngraham, bruns