IPA installation with --no-host-dns fails
    
    --no-host-dns option should allow installing IPA server on a host
    without a DNS resolvable name.
    
    Update parse_ip_address and verify_ip_address functions has been
    changed not to return None and print error messages in case of
    an error, but rather let the Exception be handled by the calling
    routine.
    
    https://fedorahosted.org/freeipa/ticket/1246