code: function setGlobalLibDirectory (argv, config) {
    const libDir =
        argv.l ||
        argv.libDir ||
        (config.libDir && fileUtils.lookupConfRequirePath(config.libDir)) ||
        process.env.DEEPSTREAM_LIBRARY_DIRECTORY
    global.deepstreamLibDir = libDir
  }
docs: Set the globalLib prefix that will be used as the directory for the logger
  and plugins within the config file