Correct the wrong word

typo fix about officially

Signed-off-by: Yongxin Li <yxli@alauda.io>

Fix some typos

Signed-off-by: Rui Cao <ruicao@alauda.io>

Revert "CoreDNS v1.2.5 (#3595)"

* Add an 'access_ip' for openstack resources to the terraform inventory builder script

* Update Openstack README

* Only use ipv4

* If there's a floating IP assigned to an openstack instance, use that for access_ip

This reverts commit 8ba6b601.

* do it like in kubernetes/secrets

* fix indentation

* processed comments

* missed one, sorry

* trailing space fix

Fix typo

need set hostname by kubeadm

Update vsphere.md

Fix some typos

fix typo

[contrib/terraform/openstack] Add support for router less deployments

Add bin_dir to kubectl version check

Upstream Changes:

-   ingress-nginx 0.20.0 (https://github.com/kubernetes/ingress-nginx/releases/tag/nginx-0.20.0)

Our Changes:

-   Sync templates with upstream changes

kubeadm sets node label node-role.kubernetes.io/master=''
and this is not configurable. We should use it everywhere.