[tool] the linter does not catch 4 spaces indentation in tools repo

When I use 4 spaces indentation, the linter does not catch it: 
```
  globals.fs.path.absolute(
      'flutter_template_images',
      'templates',
      'app_shared',
  ),
```
This passes CI and when i run `analyze.dart` locally. we probably want to catch this. 

CC: @jmagman @christopherfujino 