```
  "stubDomains": {
    "acme.local": ["1.2.3.4"]
  },
  ```
  is a map of domain to list of nameservers for the domain. This is used
  to inject private DNS domains into the kube-dns namespace. In the above
  example, any DNS requests for *.acme.local will be served by the
  nameserver 1.2.3.4.
  ```
  "upstreamNameservers": ["8.8.8.8", "8.8.4.4"]
  ```

- client-go: The `rest.AnonymousClientConfig(*rest.Config) *rest.Config` helper method no longer copies custom `Transport` and `WrapTransport` fields, because those can be used to inject user credentials. ([#75771](https://github.com/kubernetes/kubernetes/pull/75771), [@liggitt](https://github.com/liggitt))

* Fix a bug that fluentd doesn't inject container logs for CRI container runtimes (containerd, cri-o etc.) into elasticsearch on GCE. ([#61818](https://github.com/kubernetes/kubernetes/pull/61818), [@Random-Liu](https://github.com/Random-Liu))

* fix local volume issue on Windows ([#62012](https://github.com/kubernetes/kubernetes/pull/62012), [@andyzhangx](https://github.com/andyzhangx))
* Fix a bug that fluentd doesn't inject container logs for CRI container runtimes (containerd, cri-o etc.) into elasticsearch on GCE. ([#61818](https://github.com/kubernetes/kubernetes/pull/61818), [@Random-Liu](https://github.com/Random-Liu))

- The `build-tag` flag is reintroduced to conversion-gen and defaulter-gen which allow users to inject custom build tag during code generation process. ([#128259](https://github.com/kubernetes/kubernetes/pull/128259), [@dinhxuanvu](https://github.com/dinhxuanvu))

The [CSI Ephemeral Volume](https://github.com/kubernetes/enhancements/tree/master/keps/sig-storage/596-csi-inline-volumes) feature allows CSI volumes to be specified directly in the pod specification for ephemeral use cases. They can be used to inject arbitrary states, such as configuration, secrets, identity, variables or similar information, directly inside pods using a mounted volume. This was initially introduced in 1.15 as an alpha feature, and it moved to GA. This feature is used by some...