- Get disks info from df command and add info from udisks, if available.
Before, it was other way round.
- Add a functional test that asserts root disk is available
- Remove unused key file_system_type from disks info
Closes#1765
Signed-off-by: Veiko Aasa <veiko17@disroot.org>
Reviewed-by: James Valleroy <jvalleroy@mailbox.org>