title: kubernetes label name 63 character limit
body: <p>As explained at <a href="https://kubernetes.io/docs/concepts/overview/working-with-objects/labels/" rel="noreferrer">https://kubernetes.io/docs/concepts/overview/working-with-objects/labels/</a> 
  labels name and value have limit of 63 characters. Does anyone know what drives this limit? I am not looking for code condition but the real reason behind choosing this value.</p>