interface.
        *   Add custom ops and kernels through
            [kernel and op registration C API](https://github.com/tensorflow/community/blob/master/rfcs/20190814-kernel-and-op-registration.md).
        *   Register custom graph optimization passes with

* Make logdump support kubemark and support gke with 'use_custom_instance_list' ([#51834](https://github.com/kubernetes/kubernetes/pull/51834), [@shyamjvs](https://github.com/shyamjvs))
* Fixes an issue with APIService auto-registration affecting rolling HA apiserver restarts that add or remove API groups being served. ([#51921](https://github.com/kubernetes/kubernetes/pull/51921), [@liggitt](https://github.com/liggitt))

([#64780](https://github.com/kubernetes/kubernetes/pull/64780), [@luxas](https://github.com/luxas))

* Fix issue where on re-registration of device plugin, `allocatable` was not getting updated. This issue makes devices invisible to the Kubelet if device plugin restarts. Only work-around, if this fix is not there, is to restart the kubelet and then start device plugin. ([#63118]...

* Add readyReplicas to replica sets ([#29481](https://github.com/kubernetes/kubernetes/pull/29481), [@kargakis](https://github.com/kargakis))

- Added RuntimeClass restrictions and defaulting to PodSecurityPolicy. ([#73795](https://github.com/kubernetes/kubernetes/pull/73795), [@tallclair](https://github.com/tallclair))
- Kubelet plugin registration now has retry and exponential backoff logic for when registration of plugins (such as CSI or device plugin) fail. ([#73891](https://github.com/kubernetes/kubernetes/pull/73891), [@taragu](https://github.com/taragu))

[Special Interest Groups]: https://github.com/kubernetes/community/blob/master/sig-list.md

### SIG API Machinery

[SIG API Machinery][] is responsible for all aspects of the API server: API registration and discovery, generic API CRUD semantics, admission control, encoding/decoding, conversion, defaulting, persistence layer (etcd), OpenAPI, third-party resources, garbage collection, and client libraries.

* The implicit registration of Prometheus metrics for workqueue has been removed, and a plug-able interface was added. If you were using workqueue in your own binaries and want these metrics, add the following to your imports in the main package: "k8s.io/pkg/util/workqueue/prometheus"....

- Fix a bug that a node Lease object may have been created without OwnerReference. ([#84998](https://github.com/kubernetes/kubernetes/pull/84998), [@wojtek-t](https://github.com/wojtek-t))
- External facing APIs in plugin registration and device plugin packages are now available under k8s.io/kubelet/pkg/apis/ ([#83551](https://github.com/kubernetes/kubernetes/pull/83551), [@dims](https://github.com/dims))
### Release

- Kubelet: added retry of checking Unix domain sockets on Windows nodes for the plugin registration mechanism. ([#110075](https://github.com/kubernetes/kubernetes/pull/110075), [@luckerby](https://github.com/luckerby))