title: How to change root namespace for Symfony 4 maker bundle?
body: <p>I'm trying to change the default App namespace to AppBundle (the project uses S4, but the directory structure is still 3.4, currently) for Symfony 4 MakerBundle as instructed here: <a href="https://symfony.com/doc/current/bundles/SymfonyMakerBundle/index.html#configuration" rel="nofollow noreferrer">https://symfony.com/doc/current/bundles/SymfonyMakerBundle/index.html#configuration</a>.  It states I need to create a file in config/packages/dev/maker.yaml, but it does not specify what that is relative to?  I've tried /app/config/packages/dev/maker.yaml, /config/packages/dev/maker.yaml, /src/AppBundle/Resources/config/packages/dev/maker.yaml, but it seems to just ignore any of those and try to create it in App.  I've followed the format of the documentation:</p>
  
  <pre><code># config/packages/dev/maker.yaml
  # create this file if you need to configure anything
  maker:
      # tell MakerBundle that all of your classes lives in an
      # Acme namespace, instead of the default App
      # (e.g. Acme\Entity\Article, Acme\Command\MyCommand, etc)
      root_namespace: 'AppBundle'
  </code></pre>