Add the “Certified Kubernetes” mark on the kubeadm docs page

[luxas]

We should make it clear to readers that we're conformant

cc @errordeveloper @stealthybox @fabriziopandini @timothysc

[stealthybox]

Related #617

[stealthybox]

This is a good reference:

Certified Kubernetes Branding Guide

Here's an example with logo on the right.

Which docs should we add the mark to?

website

• setup
  • setup/independent/install-kubeadm no version
  • setup/independent/create-cluster-kubeadm no version
• reference
• tasks
  • reference/setup-tools/kubeadm/kubeadm no version?
  • tasks/administer-cluster/kubeadm-upgrade-1-8 all applicable versions
  • tasks/administer-cluster/kubeadm-upgrade-1-9 all applicable versions

this repo

• design_v1.8 /w version
• design_v1.9 /w version (Conformance results for v1.9/kubeadm cncf/k8s-conformance#123)
• release-cycle
• test-failures

I'll start PR's for the ones in bold.
Should we add any others?

[luxas]

I'd be fine with adding the mark to /setup/independent/install-kubeadm as well 👍

[timothysc]

We need to submit the community distribution details.

[stealthybox]

@timothysc here's the v1.8 conformance PR:
cncf/k8s-conformance#62

Already merged, but results need modifications.

[luxas]

We need to submit the community distribution details.

??
Do you mean that the badge should have some explicit "Community"-mark on it or what?

[stealthybox]

@luxas, @timothysc said he'd sync up with you on what he means by this.
It has something to do with how the conformance process has been vendor-centric up to this point.