Add __name__ == __main__ guards to setup.pys
    
    Signed-off-by: Christian Heimes <cheimes@redhat.com>
    Reviewed-By: Petr Spacek <pspacek@redhat.com>
    Reviewed-By: Martin Basti <mbasti@redhat.com>
    Reviewed-By: Lenka Doudova <ldoudova@redhat.com>