Revert "Migrate the aarch64 minimal image to osbuild"
    
    We need to revert this for a short time so the osbuild folks can deploy
    a fix. We will un-revert it when they have done so.
    
    This reverts commit d092ed0fb149e2a125aae1a7e7bbef3ee8e58386.
    
    Signed-off-by: Kevin "signedoff sucks" Fenzi <kevin@scrye.com>