1.14: docs updates

[neolit123]

placeholder docs PRs for k/website should be sent until March 1st.
deadline for reviews is March 18th.

PRs should be sent against the k/website dev-1.14 branch.

marking this as help-wanted.

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task: update kubeadm command line reference docs
assigned: @neolit123

• PR: kubeadm: update the reference documentation for 1.14 website#12911

info:
https://github.com/kubernetes/website/tree/master/content/en/docs/reference/setup-tools/kubeadm

• we have new join phase commands.
• need to look at what we kept or removed in other commands and flags.

---

task: add 1.13 -> 1.14 upgrade docs (single control-plane + HA)
assigned: @neolit123

• PR: kubeadm: add document for upgrading from 1.13 to 1.14 (single CP and HA) website#13189

info:
https://github.com/kubernetes/website/tree/master/content/en/docs/tasks/administer-cluster/kubeadm

add new page for 1.13->1.14 upgrade.
remove 1.10 -> 1.11 docs as well.

---

task: updates to HA docs in 1.14
assigned: @neolit123

• PR: kubeadm: update the 1.14 HA guide website#13191

info:
https://github.com/kubernetes/website/tree/master/content/en/docs/setup/independent
high-availability.md etc..

we are adding copy-certs support.

[neolit123]

@kubernetes/sig-cluster-lifecycle

i've added some tasks that need to be performed for updating the kubeadm 1.14 docs.

[RA489]

@neolit123 I can help with this effort.

[neolit123]

@RA489 @Klaven
i've assigned you to a couple of items. see above and thank you very much.

let's post any questions in this thread instead of pinging on private, so that we can give the change of more people to respond.
thank you !

[yagonobre]

I can take task: add 1.13 -> 1.14 upgrade docs (HA)

[neolit123]

thanks @yagonobre !

[Klaven]

@neolit123 HA placeholder PR kubernetes/website#12892

[yagonobre]

/assign