Basically, when a config option is announced to be deprecated:
* It is kept functional for 6 months or 1 release (whichever is longer);
* A warning is emitted when it is used.
We should probably add a similar policy in RELEASES.md, so that we can reference in the CRI config doc.
We planned to add something based on Kubernetes deprecation
policy of "admin-facing CLI components" in the CRI plugin. https://github.com/containerd/cri/blob/633ca7f619bb72c78e98365805e892b0f1b57327/docs/config.md#deprecation
We should probably add a similar policy in RELEASES.md, so that we can reference in the CRI config doc.