Add a test called 'SELinuxSystemdSquashfs' which will perform the same
tests as the Ext4 version, but using a Squashfs filesystem. Thanks to
this, we'll have a test on a real only filesystem.
Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
