tools: ignore node_modules when linting

This updates out individual linting to work with eslint v6. Without
this change the node_modules would also be checked for.

PR-URL: nodejs#27670
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: Refael Ackermann (רפאל פלחי) <refack@gmail.com>
Reviewed-By: Daijiro Wachi <daijiro.wachi@gmail.com>
Reviewed-By: Ujjwal Sharma <usharma1998@gmail.com>

tools/lint-js.js

@@ -35,7 +35,8 @@ if (cluster.isMaster) {
   let curPath = 'Starting ...';
   let showProgress = true;
   const globOptions = {
-    nodir: true
+    nodir: true,
+    ignore: '**/node_modules/**/*'
   };
   const workerConfig = {};
   let startTime;