
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>. sample-apiserver: add v1beta1 with advanced conversion example from v1alpha1 Follow-up of discussion in https://github.com/kubernetes/kubernetes/pull/60594.