cli: add pageCompleteCheckNetworkIdle

lib/cli/cli.js

@@ -387,6 +387,14 @@ export async function parseCommandLine() {
         'The time in ms to wait for running the page complete check for the first time. Use this when you have a pageLoadStrategy set to none',
       group: 'Browser'
     })
+    .option('browsertime.pageCompleteCheckNetworkIdle', {
+      alias: 'pageCompleteCheckNetworkIdle',
+      type: 'boolean',
+      default: false,
+      describe:
+        'Use the network log instead of running JavaScript to decide when to end the test. This will wait for 5 seconds of no network activity before it ends the test. This can be used with Chrome/Edge and Firefox.',
+      group: 'Browser'
+    })
     .option('browsertime.pageLoadStrategy', {
       alias: 'pageLoadStrategy',
       type: 'string',