Do not forget the leading "S" when appending the serial number,
otherwise we chop the last character of the model name.
Addresses: https://bugzilla.novell.com/show_bug.cgi?id=763397 Signed-off-by: Jean Delvare <jdelvare@suse.de> Signed-off-by: Petr Uzel <petr.uzel@suse.cz>