* Restored cAdvisor prometheus metrics to the main port -- a regression that existed in v1.7.0-v1.7.2 ([#49079](https://github.com/kubernetes/kubernetes/pull/49079), [@smarterclayton](https://github.com/smarterclayton))

* fix azure disk create failure due to sdk upgrade ([#67236](https://github.com/kubernetes/kubernetes/pull/67236), [@andyzhangx](https://github.com/andyzhangx))
* Kubeadm join --control-plane main workflow ([#66873](https://github.com/kubernetes/kubernetes/pull/66873), [@fabriziopandini](https://github.com/fabriziopandini))

* Add support for --image-pull-policy to 'kubectl run' ([#30614](https://github.com/kub...

* Fix resync goroutine leak in ListAndWatch ([#35672](https://github.com/kubernetes/kubernetes/pull/35672), [@tatsuhiro-t](https://github.com/tatsuhiro-t))

#### client-go

Kubernetes 1.15 consists of **25 enhancements**: 2 moving to stable, 13 in beta, and 10 in alpha. The main themes of this release are:

#### Continuous Improvement

### SIG Cloud Provider

In addition, the NodeRestriction admission plugin now prevents kubelets from modifying taints on their Node API objects, making it easier to keep track of which nodes should be in use.

### SIG CLI

* Add SNI support to the apiserver ([#35109](https://github.com/kubernetes/kubernetes/pull/35109), [@sttts](https://github.com/sttts))

### Etcd v3.5.[0-2] data corruption

Data corruption issue was found in etcd v3.5.0 release that was shipped with 1.22 Kubernetes release. Please read up-to-date [production recommendations for etcd](https://github.com/etcd-io/etcd/tree/main/CHANGELOG).

## Changes by Kind

### Deprecation

`v1beta1.KubeletConfiguration`. The new patch target is called `kubeletconfiguration` (e.g. patch file `kubeletconfiguration+json.json`).This makes it possible to apply node specific KubeletConfiguration options during `init`, `join` and `upgrade`, while the main `KubeletConfiguration` that is passed to `init` as part of the `--config` file can still act as the global stored in the cluster `KubeletConfiguration`. ([#110405](https://github.com/kubernetes/kubernetes/pull/110405), [@neolit123](https://github.com/neolit123))...