Re-run certain kubeadm init phases after config changes

[RobReus]

Details

Describe the solution you'd like:

Right now, kubeadm init only runs whenever you setup a fresh cluster/node. Certain config changes to the kubeadm init config should trigger certain init phases to be ran again. For example, the upload-config phase which uploads the config to a configmap, or the phases which generate the static pod configuration manifests.

Anything else you would like to add:

Additional Information:

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