Kubeadm: Expose the `kubeadm join` workflow as phases

- Kubeadm: added support for dry running `kubeadm reset`. The new flag `kubeadm reset --dry-run` is similar to the existing flag for `kubeadm init/join/upgrade` and allows you to see what changes would be applied. ([#107512](https://github.com/kubernetes/kubernetes/pull/107512), [@SataQiu](https://github.com/SataQiu))

    * - kubeadm upgrade apply supports all standard ways of specifying version via labels. Examples: stable-1.8, latest-1.8, ci/latest-1.9 and similar.
* - kubeadm 1.9 will detect and fail init or join pre-flight checks if kubelet is lower than 1.8.0-alpha ([#52913](https://github.com/kubernetes/kubernetes/pull/52913), [@kad](https://github.com/kad))

- Fixes a bug of identifying the correct containerd process. ([#97888](https://github.com/kubernetes/kubernetes/pull/97888), [@pacoxu](https://github.com/pacoxu))
- Fixes add-on manager leader election to use leases instead of endpoints, similar to what kube-controller-manager does in 1.20 ([#98968](https://github.com/kubernetes/kubernetes/pull/98968), [@liggitt](https://github.com/liggitt))

### Storage

- Ephemeral containers have been added in alpha. These temporary containers can be added to running pods for purposes such as debugging, similar to how `kubectl exec` runs a process in an existing container. Also like `kubectl exec`, no resources are reserved for ephemeral containers and they are not restarted when they exit. Note that container namespace targeting is not yet implemented,...

er/keps/sig-storage/596-csi-inline-volumes) feature allows CSI volumes to be specified directly in the pod specification for ephemeral use cases. They can be used to inject arbitrary states, such as configuration, secrets, identity, variables or similar information, directly inside pods using a mounted volume. This was initially introduced in 1.15 as an alpha feature, and it moved to GA. This feature is used by some CSI drivers such as the [secret-store CSI driver](https://github.com/kubernetes-...

    * There's a new *path operation decorator* parameter `response_model_skip_defaults`.
        * The name of the parameter will most probably change in a future version to `response_skip_defaults`, `model_skip_defaults` or something similar.
    * New [documentation section about using `response_model_skip_defaults`](https://fastapi.tiangolo.com/tutorial/response-model/#response-model-encoding-parameters).