33cca5251c
Automatic merge from submit-queue (batch tested with PRs 65251, 67255, 67224, 67297, 68105). If you want to cherry-pick this change to another branch, please follow the instructions here: https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md. Promote mount propagation to GA **What this PR does / why we need it**: This PR promotes mount propagation to GA. Website PR: https://github.com/kubernetes/website/pull/9823 **Release note**: ```release-note Mount propagation has promoted to GA. The `MountPropagation` feature gate is deprecated and will be removed in 1.13. ```