This story involves the following code changes

• Implement code changes at MCO
  • Remove cgroupv1 based code
  • Add an upgradeable condition set to false of the cluster operator if the cluster is using cgroupv1
  • Add a CEL validation to reject the setting of cgroupv1 (based on the latest enhancement proposal)
  • Add test cases to test the removal of cgroupv1 functionality
• Implement code changes at openshift/api
• Implement code changes at openshift/kubernetes (if we use admission handler to reject setting of cgroupv1)