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