Node device lifecycle events handler

def _nodedev_event_lifecycle_cb(conn, dev, event, detail, opaque):
    '''
    Node device lifecycle events handler
    '''
    _salt_send_event(opaque, conn, {
        'nodedev': {
            'name': dev.name()
        },
        'event': _get_libvirt_enum_string('VIR_NODE_DEVICE_EVENT_', event),
        'detail': 'unknown'  # currently unused
    })