* add proxy client-certs to kube-apiserver to allow it to proxy aggregated api servers ([#43715](https://github.com/kubernetes/kubernetes/pull/43715), [@deads2k](https://github.com/deads2k))* CentOS provider

* hyperkube

* Bump up version number of debian-base, debian-hyperkube-base and debian-iptables.  ([#67026](https://github.com/kubernetes/kubernetes/pull/67026), [@satyasm](https://github.com/satyasm))
    * Also updates dependencies of users of debian-base.
    * debian-base version 0.3.1 is already available.

* Remove unnecessary metrics (http/process/go) from being exposed by etcd-version-monitor ([#41807](https://github.com/kubernetes/kubernetes/pull/41807), [@shyamjvs](https://github.com/shyamjvs))
* Align the hyperkube image to support running binaries at /usr/local/bin/ like the other server images ([#41017](https://github.com/kubernetes/kubernetes/pull/41017), [@luxas](https://github.com/luxas))

        * Require authenticating towards Elasticsearch, as Elasticsearch 5.5 by default requires basic authentication
* Rebase hyperkube image on debian-hyperkube-base, based on debian-base. ([#48365](https://github.com/kubernetes/kubernetes/pull/48365), [@ixdy](https://github.com/ixdy))

## Other Notable Changes

### Bug Fixes

- Update debian-iptables and hyperkube-base images to include CVE fixes. ([#67365](https://github.com/kubernetes/kubernetes/pull/67365), [@ixdy](https://github.com/ixdy))

  - The `--containerized` flag is deprecated and will be removed in a future release ([#74267](https://github.com/kubernetes/kubernetes/pull/74267), [@dims](https://github.com/dims))

- hyperkube
  - The `--make-symlinks` flag is deprecated and will be removed in a future release. ([#74975](https://github.com/kubernetes/kubernetes/pull/74975), [@dims](https://github.com/dims))
- API

- Kubernetes no longer supports building hyperkube images ([#88676](https://github.com/kubernetes/kubernetes/pull/88676), [@dims](https://github.com/dims)) [SIG Cluster Lifecycle and Release]

- Kubeadm: Remove the deprecated hyperkube image support in `v1beta3`. This implies removal of `ClusterConfiguration.UseHyperKubeImage.` ([#101537](https://github.com/kubernetes/kubernetes/pull/101537), [@neolit123](https://github.com/neolit123))

* Updates to use debian-iptables v11.0, debian-hyperkube-base 0.12.0, and kube-addon-manager:v8.9. ([#70209](https://github.com/kubernetes/kubernetes/pull/70209), [@ixdy](https://github.com/ixdy))