* `{WorkQueueName}_work_duration`
        * `{WorkQueueName}_unfinished_work_seconds`
        * `{WorkQueueName}_longest_running_processor_microseconds`
        * `{WorkQueueName}_retries`
    * Please convert to the following metrics:
        * `workqueue_depth`
        * `workqueue_adds_total`
        * `workqueue_queue_latency_seconds`
        * `workqueue_work_duration_seconds`

  * Deployment was Alpha in 1.1 (though it had apiVersion extensions/v1beta1) and
was disabled by default. Due to some non-backward-compatible API changes, any
Deployment objects you created in 1.1 won’t work with in the 1.2 release.
     * Before upgrading to 1.2, <strong>delete all Deployment alpha-version resources</strong>, including the Replication Controllers and Pods the Deployment manages. Then

* Bugfix: OpenAPI models may not get group-version-kind extension if kubernetes is vendored in another project (e.g. minikube). Kubectl 1.8 needs this extension to work with those projects. ([#53152](https://github.com/kubernetes/kubernetes/pull/53152), [@mbohlool](https://github.com/mbohlool))

### Other notable changes

* federation: fix dns provider initialization issues ([#27252](https://github.com/kubernetes/kubernetes/pull/27252), [@mfanjie](https://github.com/mfanjie))
* Updating federation up scripts to work in non e2e setup ([#27260](https://github.com/kubernetes/kubernetes/pull/27260), [@nikhiljindal](https://github.com/nikhiljindal))

- Revert kubelet prober metrics `pod` tag to include actual pod name ([#118549](https://github.com/kubernetes/kubernetes/pull/118549), [@a7i](https://github.com/a7i)) [SIG Node]
- Update kube-apiserver's priority & fairness work estimator such that 'max seats' is MIN(0.15 x nominalCL, nominalCL / handSize)
  

- Kubeadm: fix a bug where the --rootfs global flag does not work with "kubeadm upgrade node" for control plane nodes. ([#123096](https://github.com/kubernetes/kubernetes/pull/123096), [@neolit123](https://github.com/neolit123)) [SIG Cluster Lifecycle]

## Dependencies

### Added