Add bits required for aarch64 images
    
    We drop the explicit grub2 as aarch64 only has grub2-efi but anaconda will
    sort that out and ensure all the right bits are installed during the install
    so we should get the right grub2 bootloader options for each arch OOTB.
    
    Signed-off-by: Peter Robinson <pbrobinson@fedoraproject.org>