This story is the continuation of addressing the review comments.

Refactoring involves changes to the persistence of Image pull cache data to the disk per image.
Address the review comments on the "Ensure secret pulled images" implementation PR and the related docs, blog PRs

The latest code can be seen on this[1] branch as of today

Upstream KEP - https://github.com/kubernetes/enhancements/tree/master/keps/sig-node/2535-ensure-secret-pulled-images  
sig-node doc - https://docs.google.com/spreadsheets/d/19BFLAxv6V6V0BI-jNSpkdpaXTGdSyINcRTxJf3ngU9k/edit#gid=911207538 

Issue Link: https://github.com/kubernetes/enhancements/issues/2535 

Feature PR: https://github.com/kubernetes/kubernetes/pull/125817 
Docs PR: https://github.com/kubernetes/website/pull/46958 
Blog PR: https://github.com/kubernetes/website/pull/47053 

[1] - https://github.com/sairameshv/kubernetes/commits/ensure-secret-pulled-image-state/ 

Latest Discussion - https://docs.google.com/document/d/1Of3f_oxloi4JuJXkII2BI55p7mgi3J_7qyFIHUxEfDc/edit#heading=h.uy3i20t864k8