title: kubectl port forwarding timeout issue
body: <p>While using kubectl port-forward function I was able to succeed in port forwarding a local port to a remote port. However it seems that after a few minutes idling the connection is dropped. Not sure why that is so.</p>
  
  <p>Here is the command used to portforward:</p>
  
  <pre><code>kubectl --namespace somenamespace port-forward somepodname 50051:50051
  </code></pre>
  
  <p>Error message:</p>
  
  <pre><code>Forwarding from 127.0.0.1:50051 -&gt; 50051
  Forwarding from [::1]:50051 -&gt; 50051
  E1125 17:18:55.723715    9940 portforward.go:178] lost connection to pod
  </code></pre>
  
  <p>Was hoping to be able to keep the connection up</p>