title: Schedule pod on specific node without modifying PodSpec
body: <p>As a k8s cluster administrator, I want to specify on which nodes (using labels) pods will be scheduled, but without modifying any PodSpec section.</p>
  
  <p>So, nodeSelector, affinity and taints can't be options.
  Is there any other solution ?</p>
  
  <p>PS: the reason I can't modify the PodSpec is that deployed applications are available as Helm charts and I don't have hand on those files. Moreover, if I change the PodSpec, it will be lost on next release upgrade.</p>