title: Hide error message on Policy failure in Istio
body: <p>If I define an AuthorizationPolicy in Istio which is violated, the error message is returned to me, for example:</p>
  
  <pre><code>INTERNAL:performing check operation failed: 1 error occurred:%0A%09* rpc error: code = PermissionDenied desc = RBAC: access denied%0A%0A
  </code></pre>
  
  <p>Is there a way I can hide the message?</p>
  
  <p>Istio version: 1.4.5</p>