- update distroless-iptables to v0.4.6 ([#123772](https://github.com/kubernetes/kubernetes/pull/123772), [@cpanato](https://github.com/cpanato)) [SIG Release and Testing]

### Bug or Regression

- Fix error when trying to expand a volume that does not require node expansion ([#123055](https://github.com/kubernetes/kubernetes/pull/123055), [@gnufied](https://github.com/gnufied)) [SIG Node and Storage]

* Allow missing keys in templates by default ([#39486](https://github.com/kubernetes/kubernetes/pull/39486), [@ncdc](https://github.com/ncdc))
* Add error message when trying to use clusterrole with namespace in kubectl ([#36424](https://github.com/kubernetes/kubernetes/pull/36424), [@xilabao](https://github.com/xilabao))

  way it used to; now it will only change when services or endpoints actually
  change, rather than reliably updating every 60 seconds (or whatever). If you
  are trying to monitor for whether iptables updates are failing, the

* Metrics for Pod, Container, Log filesystem
* The run_as_user security contexts
* Local persistent volumes and fstype for Azure disk

Improvements in Windows Server version 1803 also bring new storage functionality to Kubernetes v1.11, including:

* Volume mounts for ConfigMap and Secret

### Bug or Regression

- Cherry-pick #115769: Fix the problem Pod terminating stuck because of trying to umount not actual mounted dir. ([#119831](https://github.com/kubernetes/kubernetes/pull/119831), [@cartermckinnon](https://github.com/cartermckinnon)) [SIG Node and Storage]

### Bug or Regression

- Cherry-pick #115769: Fix the problem Pod terminating stuck because of trying to umount not actual mounted dir. ([#119832](https://github.com/kubernetes/kubernetes/pull/119832), [@cartermckinnon](https://github.com/cartermckinnon)) [SIG Node and Storage]

  -  Remove already deprecated options `resyncperiod` and `upstream` in the Kubernetes plugin.
  -  Includes Prometheus metrics name changes (to bring them in line with standard Prometheus metrics naming convention). They will be backward incompatible with existing reporting formulas that use the old metrics' names.

* Update to use go 1.12.9 ([#81489](https://github.com/kubernetes/kubernetes/pull/81489), [@BenTheElder](https://github.com/BenTheElder))
* Update golang/x/net dependency to bring in fixes for CVE-2019-9512, CVE-2019-9514 ([#81525](https://github.com/kubernetes/kubernetes/pull/81525), [@cblecker](https://github.com/cblecker))

  - update distroless-iptables to v0.4.6 ([#123773](https://github.com/kubernetes/kubernetes/pull/123773), [@cpanato](https://github.com/cpanato)) [SIG Release and Testing]

### Bug or Regression

- Fix error when trying to expand a volume that does not require node expansion ([#123055](https://github.com/kubernetes/kubernetes/pull/123055), [@gnufied](https://github.com/gnufied)) [SIG Node and Storage]

## Changelog since v1.15.2

### Other notable changes

* Update golang/x/net dependency to bring in fixes for CVE-2019-9512, CVE-2019-9514 ([#81522](https://github.com/kubernetes/kubernetes/pull/81522), [@cblecker](https://github.com/cblecker))