title: Convert CreationTimeStamp type to string
body: <p>I am getting time from <code>pod.CreationTimeStamp</code> and trying to store it in a variable.how can i store time in to string.</p>
  
  <pre class="lang-golang prettyprint-override"><code> tmp := json_format{}
   pods, _ := clientset.CoreV1().Pods(namespace).List(v1.ListOptions{LabelSelector:app_name})
  
   for _, pod := range pods.Items {
       tmp.Creation_Time = append(tmp.Creation_Time,pod.CreationTimestamp) 
  }
  </code></pre>
  
  <p>Its giving this error: <code>cannot convert pod.ObjectMeta.CreationTimestamp (type "k8s.io/apimachinery/pkg/apis/meta/v1".Time) to type string</code></p>
  
  <pre><code>type json_format struct{
  Creation_Time string
  }
  </code></pre>