meta-selftest: wic: Add test for --use-uuid / --fsuuid
- Mount a '/media' partition to wic-image-minimal.wks with a known UUID.
- In test_qemu, sort our output from checking the output of 'mount' as
it may not be stable. Also, do not check the exit code as passing any
output to cut ensures a 0 exit code.
- Check for a 'UUID=' line in /etc/fstab with out expected output.
Signed-off-by: Tom Rini <trini@konsulko.com> Signed-off-by: Ross Burton <ross.burton@intel.com>