title: Error: found in Chart.yaml, but missing in charts/ directory: mysql
body: <p>I have added mysql in requirements.yaml. Helm dependency downloads the mysql chart</p>
  
  <pre><code>helm dependency update
  Hang tight while we grab the latest from your chart repositories...
  ...Successfully got an update from the "nginx" chart repository
  ...Successfully got an update from the "stable" chart repository
  
  Update Complete. ⎈Happy Helming!⎈
  Saving 1 charts
  Downloading mysql from repo &lt;our private repository&gt;
  Deleting outdated charts
  </code></pre>
  
  <p>But when I do helm install my_app_chart ../my_app_chart
  It gives error </p>
  
  <pre><code>Error: found in Chart.yaml, but missing in charts/ directory: mysql
  </code></pre>