kube-etcd certificate requires additional SAN's

Author: dgengtek

content/en/docs/setup/best-practices/certificates.md

@@ -77,7 +77,7 @@ Required certificates:
 
 | Default CN                    | Parent CA                 | O (in Subject) | kind                                   | hosts (SAN)                                 |
 |-------------------------------|---------------------------|----------------|----------------------------------------|---------------------------------------------|
-| kube-etcd                     | etcd-ca                   |                | server, client                         | `localhost`, `127.0.0.1`                        |
+| kube-etcd                     | etcd-ca                   |                | server, client                         | `<hostname>`, `<Host_IP>`, `localhost`, `127.0.0.1` |
 | kube-etcd-peer                | etcd-ca                   |                | server, client                         | `<hostname>`, `<Host_IP>`, `localhost`, `127.0.0.1` |
 | kube-etcd-healthcheck-client  | etcd-ca                   |                | client                                 |                                             |
 | kube-apiserver-etcd-client    | etcd-ca                   | system:masters | client                                 |                                             |