function pushLocationMetric(location, byteLength, log, cb) {
    const locationId = _getLocationId(location);
    return utapi.pushLocationMetric(locationId, byteLength,
        log.getSerializedUids(), cb);
}
Call the Utapi Client 'pushLocationMetric' method with the
associated parameters
@param {string} location - name of data backend
@param {number} byteLength - number of bytes
@param {object} log - werelogs logger
@param {function} cb - callback to call
@return {function} - `utapi.pushLocationMetric`