title: Remove .AspNet prefix in cookie name
body: <p>When using the OWIN Cookie authentication middleware, you can partially control the name of the cookie by changing the <code>AuthenticationType</code> in the properties, f.e.:</p>
  
  <pre><code>app.UseCookieAuthentication(new CookieAuthenticationOptions
      {
          AuthenticationType = "Test",
          //...
      });
  </code></pre>
  
  <p>Above will result in a cookie named <em>.AspNet.Test</em>. Is there any way to get rid of that <em>.AspNet.</em> prefix because we believe it reveals valuable information about the stack we're using.</p>