title: Kubenetes: change hpa min-replica
body: <p>I have Kubernetes cluster hosted in Google Cloud. I created a deployment and defined a hpa rule for it:</p>
  
  <pre><code>kubectl autoscale deployment my_deployment --min 6 --max 30 --cpu-percent 80
  </code></pre>
  
  <p>I want to run a command that editing the <code>--min</code> value, <strong>without remove and re-create a new hpa rule</strong>. Something like: </p>
  
  <pre><code>$ kubectl autoscale deployment my_deployment --min 1 --max 30
  Error from server (AlreadyExists): horizontalpodautoscalers.autoscaling "my_deployment" already exists
  </code></pre>
  
  <p>Is this possible to edit hpa (min, max, cpu-percent, ...) on command line?</p>