installer-media: Make use of new udev properties
installer-media: Make use of new udev properties

New udev/blkid expose more ISO9660 properties. The libosinfo udev rules
that provided the 'OSINFO_*' properties will soon be ditched as a
result.

This patch adapts the code for these changes but without breaking it
against existing libosinfo/udev.

https://bugzilla.gnome.org/show_bug.cgi?id=694141

vbenes/gnome-boxes,vbenes/gnome-boxes