title: gcloud component update fails
body: <p>I've deployed to VM's running Debian on GCE and have cron scripts that use gcloud commands.</p>
  
  <p>I noticed that <code>gcloud components update</code> retuns this error</p>
  
  <blockquote>
    <p>ERROR: (gcloud.components.update) The component manager is disabled for this installation</p>
  </blockquote>
  
  <p>My mac works fine to update gcloud and add new components.</p>
  
  <p>The built in gcloud tools that were in the VM image won't update.  I have not found out how to enable the component manager.</p>