Automatic merge from submit-queue. If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>. Fix UnmountDevice with deleted pod. When a pod is deleted, kubelet can't read VolumeAttachment objects. It should cache all information in a json file. Fixes #63827 ~~Work in progress: missing (unit?) tests~~ **Release note**: ```release-note NONE ``` @saad-ali @vladimirvivien @sbezverk /sig storage