### Other notable changes

* Metadata Agent Improvements ([#66485](https://github.com/kubernetes/kubernetes/pull/66485), [@bmoyles0117](https://github.com/bmoyles0117))
    * Bump metadata agent version to 0.2-0.0.21-1.
    * Expand the metadata agent's access to all API groups.
    * Remove metadata agent config maps in favor of command line flags.
    * Update the metadata agent's liveness probe to a new /healthz handler.

* Bump ip-masq-agent version to v2.3.0 to fix vulnerabilities ([#77833](https://github.com/kubernetes/kubernetes/pull/77833), [@anfernee](https://github.com/anfernee))

    * Remove metadata agent config maps in favor of command line flags.
    * Update the metadata agent's liveness probe to a new /healthz handler.
    * Logging Agent Improvements
    * Bump logging agent version to 0.2-1.5.33-1-k8s-1.
    * Appropriately set log severity for k8s_container.
    * Fix detect exceptions plugin to analyze message field instead of log field.

* Bump ip-masq-agent to v2.1.1 ([#67916](https://github.com/kubernetes/kubernetes/pull/67916), [@MrHohn](https://github.com/MrHohn))
    * - Update debian-iptables image for CVEs.
    * - Change chain name to IP-MASQ to be compatible with the
    * pre-injected masquerade rules.

- Bug: client-go clientset was not defaulting to the user agent, and was using the default golang agent for all the requests. ([#108772](https://github.com/kubernetes/kubernetes/pull/108772), [@aojea](https://github.com/aojea))

- GCE/Windows: added support for the stackdriver logging agent ([#76850](https://github.com/kubernetes/kubernetes/pull/76850), [@yujuhong](https://github.com/yujuhong))

* Enable extensions/v1beta1/NetworkPolicy by default ([#28549](https://github.com/kubernetes/kubernetes/pull/28549), [@caseydavenport](https://github.com/caseydavenport))
* MESOS: Support a pre-installed km binary at a well known, agent-local path ([#28447](https://github.com/kubernetes/kubernetes/pull/28447), [@k82cn](https://github.com/k82cn))

## Changelog since v1.6.1

### Other notable changes

* Fix for [Windows kubectl sending full path to binary in User Agent](https://github.com/kubernetes/kubernetes/issues/44419). ([#44622](https://github.com/kubernetes/kubernetes/pull/44622), [@monopole](https://github.com/monopole))

    * In 1.16, the masq-agent daemonset add-on will switch to using `node.kubernetes.io/masq-agent-ds-ready` as a node selector.
* Kubelet: replace `du` and `find` with a golang implementation ([#74675](https://github.com/kubernetes/kubernetes/pull/74675), [@dashpole](https://github.com/dashpole))