- Kubeadm: fix panic in the command "kubeadm certs check-expiration" when "/etc/kubernetes/pki" exists but cannot be read. ([#124124](https://github.com/kubernetes/kubernetes/pull/124124), [@carlory](https://github.com/carlory)) [SIG Cluster Lifecycle]
- NONE ([#124327](https://github.com/kubernetes/kubernetes/pull/124327), [@ritazh](https://github.com/ritazh)) [SIG Auth]

    * The body size limit does not apply to subresources like pods/proxy that proxy request content to another server.
* Kustomize is developed in its own repo https://github.com/kubernetes-sigs/kustomize ([#73033](https://github.com/kubernetes/kubernetes/pull/73033), [@Liujingfang1](https://github.com/Liujingfang1))
    * This PR added a new subcommand `kustomize` in kubectl. 

This allows the CRI runtime developers to verify that their runtime conforms to CRI, without needing to set up Kubernetes components or run Kubernetes end-to-end tests. ([docs](https://github.com/kubernetes/community/blob/master/contributors/devel/sig-node/cri-validation.md) and [release notes](https://github.com/kubernetes-incubator/cri-tools/releases/tag/v0.1)) ([kubernetes/features#292](https://github.com/kubernetes/enhancements/issues/292))

* [alpha] Adds support of container metrics...