Rsync changes to support primary and alt arches
    
    Now, we have all arches in one compose. So, we need to split
    the compose based on arches and rync them to different locations
    depending upon whether the arch is a primary or an alt arch.
    
    Primary arches : x86_64, armhfp
    Alt arches : aarch64, i386, ppc64, ppc64le
    
    Signed-off-by: Mohan Boddu <mboddu@redhat.com>