- Kubeadm: if the user has customized their image repository via the kubeadm configuration, pass the custom pause image repository and tag to the kubelet via --pod-infra-container-image not only for Docker but for all container runtimes. This flag tells the kubelet that it should not garbage collect the image. ([#99476](https://github.com...

### OpenStack

SIG-OpenStack updated the OpenStack provider to use newer APIs, consolidated community code into one repository, engaged with the Cloud Provider Working Group to have a consistent plan for moving provider code into individual repositories, improved testing of provider code, and strengthened ties with the OpenStack developer community.

- `kubeadm init` and `kubeadm init phase` now have a `--image-repository` flag, improving support for environments with limited access to official kubernetes repository.
- The DynamicKubeletConfig and SelfHosting functionality was moved outside of `kubeadm init` and feature gates and is now exposed under `kubeadm alpha`.

* set EnableHTTPSTrafficOnly in azure storage account creation ([#64957](https://github.com/kubernetes/kubernetes/pull/64957), [@andyzhangx](https://github.com/andyzhangx))
* Re-adds `pkg/generated/bindata.go` to the repository to allow some parts of k8s.io/kubernetes to be go-vendorable. ([#65985](https://github.com/kubernetes/kubernetes/pull/65985), [@ixdy](https://github.com/ixdy))

### SIG CLI

- Added a sample-cli-plugin staging repository and cli-runtime staging repository to help showcase the new kubectl plugins mechanism. ([#67938](https://github.com/kubernetes/kubernetes/pull/67938), [#67658](https://github.com/kubernetes/kubernetes/pull/67658), [@soltysh](https://github.com/soltysh))

- Hyperkube will now be available in a new Github repository and will not be included in the kubernetes release from 1.17 onwards ([#83454](https://github.com/kubernetes/kubernetes/pull/83454), [@dims](https://github.com/dims))

### Other (Cleanup or Flake)

- Kubeadm: change the default image repository for CI images from 'gcr.io/kubernetes-ci-images' to 'gcr.io/k8s-staging-ci-images' ([#97087](https://github.com/kubernetes/kubernetes/pull/97087), [@SataQiu](https://github.com/SataQiu)) [SIG Cluster Lifecycle]

## Dependencies

- Image garbage collection no longer fails for images with only one tag but more than one repository associated. ([#70647](https://github.com/kubernetes/kubernetes/pull/70647), [@corvus-ch](https://github.com/corvus-ch))

- `kubeadm`: fixed `nil` pointer when `etcd` member is already removed. ([#119753](https://github.com/kubernetes/kubernetes/pull/119753), [@pacoxu](https://github.com/pacoxu))
- `kubeadm`: fixed the bug where `--image-repository` flag is missing for some init
  phase sub-commands. ([#120072](https://github.com/kubernetes/kubernetes/pull/120072), [@SataQiu](https://github.com/SataQiu))

- Kubeadm: now supports image repository format validation. ([#112732](https://github.com/kubernetes/kubernetes/pull/112732), [@SataQiu](https://github.com/SataQiu))