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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>. kubeadm: Use separate YAML docs for the kubelet and kube-proxy ComponentConfigs **What this PR does / why we need it**: This PR makes kubeadm load the ComponentConfig for the kubelet and kube-proxy from separate YAML documents in the `kubeadm init` config file. This is backwards-compatible with `v1alpha2`. The ComponentConfigs are stored internally in the internal kubeadm `MasterConfiguration` struct, but when marshalling the componentconfigs are written as separate YAML documents. **Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*: ref: kubernetes/kubeadm#911 Depends on: - [x] https://github.com/kubernetes/kubernetes/pull/65776 - [x] https://github.com/kubernetes/kubernetes/pull/65628 - [x] https://github.com/kubernetes/kubernetes/pull/65629 - [x] https://github.com/kubernetes/kubernetes/pull/65631 - [x] https://github.com/kubernetes/kubernetes/pull/65940 **Special notes for your reviewer**: Only review the last five commits please. (The last commit is purely autogenerated, so can be skipped) **Release note**: ```release-note kubeadm: Use separate YAML documents for the kubelet and kube-proxy ComponentConfigs ``` @kubernetes/sig-cluster-lifecycle-pr-reviews /assign @timothysc
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