Ensure Fedora Cloud has grub installed for BIOS boot on x86_64
    
    Without this, there is no guarantee that BIOS would
    be correctly set up if the install environment is UEFI.
    
    Fixes: 611edda1490ebb93d996acb29692805ec9e481d3
    
    Signed-off-by: Neal Gompa <ngompa13@gmail.com>