title: google managed-VMs specify instance in URL
body: <p>I use google managed-VMs. My module has <strong>several</strong> instances. I need to perform a HTTP call on <strong>each of these</strong> instances. Hence, I would like to know if there is a way to specify the recipient instance in the URL. </p>
  
  <p>For instance I tried: <code>http://&lt;instance-name&gt;.&lt;module-name&gt;.&lt;project-name&gt;.appspot.com/</code> without success.</p>