Implemented spiceport vm tag

    return

@_vir_tag

def spiceport(dom):

    """Spice port for the VM console access."""

    try:

        port = et.ElementTree().parse(

            StringIO(dom.lv_dom.XMLDesc(0))

        ).find('devices/graphics[@type="spice"]').get('port')

    except Exception:

        logger.exception('SpicePort')

        raise

    try:

        if 0 < int(port) < 65536:

            return port

    except (TypeError, ValueError):

        pass

    return

@ttl(10)

@refresh(10)

@_vir_tag