image-sdk: Fix ova image boot

OVA appliance does not display the Apertis UI. The VirtualBox display controller should not enable the 3D acceleration.

The OVA appliance needs an IDE controller to be able to mount the VirtualBox Guest Additions DVD.

I also Add an Apertis Group to group all the apertis images in a "subfolder" in the VirtualBox interface.

Signed-off-by: Frédéric Danis frederic.danis@collabora.com