Release 0.20

remove --machines and related deprecated flags from code and docs

Adding IANA_SVC_NAME definition to docs/design/identifiers.md

Scrape latency stats from integration tests

Add --force to `kubectl update`

Updating the "invalid value" error message to include the list of valid values

Use ginkgo's new Skip()

Allowing for HTTPS Probes

Fix ubernetes shortlink in docs.

To add validation for service ports when defined as string

update relevant tests

Add some sleep to the verification loop.

Changed ping to netcat in Internet connection test

Fixing spacing in documentation comments

EOL Google's registry caching mirror

Programming is hard, sleep 5!

Update top level logging documentation

Update guestbook-go example

proxy e2e test improvements

Update doc to reflect that only kubelet is installed directly

fix variable shadowing bug where provided RootCA would always be a nil byte slice

Follow up #10285

Update skydns/msg dep

tldr for dns example; rename kubectl log to logs

enable networking test on a one-node local cluster

Include PodStatus.Message and PodStatus.Reason when kubectl describe …

Document node capacity.

Add source in “error from server” message when using kubectl

Enhance test api to support test cases involved multiple containers