title: How to extend config of different bundle in Symfony2?
body: <p>I know I can overwrite templates or extend classes of other bundles. But can I extend also configs? I was hoping to be able to load other namespaces from config in <code>DependenyInjection/AcmeExtension.php</code>'s load method, but I haven't found anything about it anywhere.</p>
  
  <p><strong>Example:</strong></p>
  
  <p>I have AcmeBundle which defines following in config:</p>
  
  <pre><code>acme:
      a: 1
  </code></pre>
  
  <p>I want to extend this bundle (in new bundle called AwesomeAcmeBundle) and be able to define another variables either by adding them to original namespace:</p>
  
  <pre><code>acme:
      a: 1
      b: 2
  </code></pre>
  
  <p>or by wrapping original namespace to new one and adding new variables there:</p>
  
  <pre><code>awesome_acme:
      a: 1
      b: 2
  </code></pre>