* Mechanism of adding `federation domain maps` to kube-dns deployment via `--federations` flag is superseded by adding/updating `federations` key in `kube-system/kube-dns` configmap. If user is using kubefed tool to join cluster federation, adding federation domain maps to kube-dns is already taken care by `kubefed join` and does not need further action.

### Instrumentation
- Bump version of event-exporter to 0.3.1, to switch it to protobuf. ([#83396](https://github.com/kubernetes/kubernetes/pull/83396), [@loburm](https://github.com/loburm))
- Bumps metrics-server version to v0.3.6 with following bugfix:

- Fix bug where Server Side Apply causes spurious resourceVersion bumps on no-op patches to custom resources. ([#125263](https://github.com/kubernetes/kubernetes/pull/125263), [@jpbetz](https://github.com/jpbetz)) [SIG API Machinery and Testing]

- Fixed a bug where CEL expressions in CRD validation rules would incorrectly compute a high estimated cost for functions that return strings, lists or maps.

## Changes by Kind

### API Change

- Fixed a bug where CEL expressions in CRD validation rules would incorrectly compute a high estimated cost for functions that return strings, lists or maps.

* Bump metrics-server to v0.3.5 ([#83015](https://github.com/kubernetes/kubernetes/pull/83015), [@olagacek](https://github.com/olagacek))
* Bumps metrics-server version to v0.3.6 with following bugfix: ([#83907](https://github.com/kubernetes/kubernetes/pull/83907), [@olagacek](https://github.com/olagacek))

*   The Go version was upgraded from go1.8.3 to **go1.9.2** ([#51375](https://github.com/kubernetes/kubernetes/pull/51375),[ @cblecker](https://github.com/cblecker))
    *   The minimum supported go version bumps to 1.9.1. ([#55301](https://github.com/kubernetes/kubernetes/pull/55301),[ @xiangpengzhao](https://github.com/xiangpengzhao))

- cloud.google.com/go/lifesciences: v0.9.4
- cloud.google.com/go/logging: v1.9.0
- cloud.google.com/go/longrunning: v0.5.4
- cloud.google.com/go/managedidentities: v1.6.4
- cloud.google.com/go/maps: v1.6.3
- cloud.google.com/go/mediatranslation: v0.8.4
- cloud.google.com/go/memcache: v1.10.4
- cloud.google.com/go/metastore: v1.13.3
- cloud.google.com/go/monitoring: v1.17.0

- cloud.google.com/go/logging: v1.7.0 → v1.9.0
- cloud.google.com/go/longrunning: v0.5.1 → v0.5.4
- cloud.google.com/go/managedidentities: v1.6.1 → v1.6.4
- cloud.google.com/go/maps: v1.4.0 → v1.6.3
- cloud.google.com/go/mediatranslation: v0.8.1 → v0.8.4
- cloud.google.com/go/memcache: v1.10.1 → v1.10.4
- cloud.google.com/go/metastore: v1.12.0 → v1.13.3

- cloud.google.com/go/lifesciences: v0.8.0
- cloud.google.com/go/logging: v1.7.0
- cloud.google.com/go/longrunning: v0.4.1
- cloud.google.com/go/managedidentities: v1.5.0
- cloud.google.com/go/maps: v0.7.0
- cloud.google.com/go/mediatranslation: v0.7.0
- cloud.google.com/go/memcache: v1.9.0
- cloud.google.com/go/metastore: v1.10.0
- cloud.google.com/go/monitoring: v1.13.0