Function loadConfig

Returns {
    alertRules: string;
    alertRulesFailPercentile: number;
    alertRulesFilename: string;
    blockedUrls: string;
    chromiumFieldTrials: string;
    chromiumPath: string;
    chromiumUrl: string;
    chromiumVersion: any;
    clearCookies: boolean;
    cookies: string;
    customMetrics: string;
    customUrlHandler: string;
    debuggingAddress: string;
    debuggingPort: number;
    detailedStatsPath: string;
    deviceScaleFactor: number;
    disabledVideoCodecs: string;
    display: string;
    downloadResponses: string;
    enableBrowserLogging: string;
    enableDetailedStats: string;
    enableGpu: string;
    extraCSS: string;
    extraHeaders: string;
    hardwareConcurrency: number;
    incognito: boolean;
    localStorage: string;
    maxVideoDecoders: number;
    maxVideoDecodersAt: number;
    overridePermissions: string;
    pageLogFilter: string;
    pageLogPath: string;
    prometheusPushgateway: string;
    prometheusPushgatewayAuth: string;
    prometheusPushgatewayGzip: boolean;
    prometheusPushgatewayJobName: string;
    pushStatsId: string;
    pushStatsUrl: string;
    randomAudioPeriod: number;
    randomAudioProbability: number;
    randomAudioRange: number;
    responseModifiers: string;
    rtcStatsTimeout: number;
    runDuration: number;
    scriptParams: string;
    scriptPath: string;
    serverData: string;
    serverPort: number;
    serverSecret: string;
    serverUseHttps: boolean;
    sessions: number;
    sessionStorage: string;
    showPageLog: boolean;
    showStats: boolean;
    spawnRate: number;
    startSessionId: number;
    startTimestamp: number;
    statsInterval: number;
    statsPath: string;
    tabsPerSession: number;
    throttleConfig: string;
    url: string;
    urlQuery: string;
    useFakeMedia: boolean;
    userAgent: string;
    videoCachePath: string;
    videoCacheRaw: boolean;
    videoDuration: number;
    videoFormat: string;
    videoFramerate: number;
    videoHeight: number;
    videoPath: string;
    videoSeek: number;
    videoWidth: number;
    visqolKeepSourceFiles: boolean;
    visqolPath: string;
    vmafCrop: string;
    vmafKeepIntermediateFiles: boolean;
    vmafKeepSourceFiles: boolean;
    vmafPath: string;
    vmafPrepareVideo: string;
    vmafPreview: boolean;
    vmafProcessVideo: string;
    vmafVideoCrop: string;
    windowHeight: number;
    windowWidth: number;
}