Exports an instance.

    @type instance: string
    @param instance: Instance name
    @type mode: string
    @param mode: Export mode
    @rtype: string
    @return: Job ID

def ExportInstance(r, instance, mode, destination, shutdown=None,
                   remove_instance=None, x509_key_name=None,
                   destination_x509_ca=None):
    """
    Exports an instance.

    @type instance: string
    @param instance: Instance name
    @type mode: string
    @param mode: Export mode
    @rtype: string
    @return: Job ID
    """

    body = {
        "destination": destination,
        "mode": mode,
    }

    if shutdown is not None:
        body["shutdown"] = shutdown

    if remove_instance is not None:
        body["remove_instance"] = remove_instance

    if x509_key_name is not None:
        body["x509_key_name"] = x509_key_name

    if destination_x509_ca is not None:
        body["destination_x509_ca"] = destination_x509_ca

    return r.request("put", "/2/instances/%s/export" % instance, content=body)