kubeadm: promote the "kubeadm certs" command to GA (#24410)

The command resided under "kubeadm alpha certs".
It will be promoted to GA in 1.20 as "kubeadm certs".

The existing command "kubeadm alpha" will
remain present for one more release, but it will be hidden
from documentation as it is deprecated.

content/en/docs/reference/setup-tools/kubeadm/generated/kubeadm_certs_certificate-key.md

@@ -11,7 +11,7 @@ generate and print one for you.
 
 
 ```
-kubeadm alpha certs certificate-key [flags]
+kubeadm certs certificate-key [flags]
 ```
 
 ### Options

content/en/docs/reference/setup-tools/kubeadm/generated/kubeadm_certs_check-expiration.md

@@ -5,7 +5,7 @@
 Checks expiration for the certificates in the local PKI managed by kubeadm.
 
 ```
-kubeadm alpha certs check-expiration [flags]
+kubeadm certs check-expiration [flags]
 ```
 
 ### Options

content/en/docs/reference/setup-tools/kubeadm/generated/kubeadm_certs_generate-csr.md

@@ -9,14 +9,14 @@ This command is designed for use in [Kubeadm External CA Mode](https://kubernete
 The PEM encoded signed certificates should then be saved alongside the key files, using ".crt" as the file extension, or in the case of kubeconfig files, the PEM encoded signed certificate should be base64 encoded and added to the kubeconfig file in the "users > user > client-certificate-data" field.
 
 ```
-kubeadm alpha certs generate-csr [flags]
+kubeadm certs generate-csr [flags]
 ```
 
 ### Examples
 
 ```
   # The following command will generate keys and CSRs for all control-plane certificates and kubeconfig files:
-  kubeadm alpha certs generate-csr --kubeconfig-dir /tmp/etc-k8s --cert-dir /tmp/etc-k8s/pki
+  kubeadm certs generate-csr --kubeconfig-dir /tmp/etc-k8s --cert-dir /tmp/etc-k8s/pki
 ```
 
 ### Options

content/en/docs/reference/setup-tools/kubeadm/generated/kubeadm_certs_renew.md

@@ -5,7 +5,7 @@
 This command is not meant to be run on its own. See list of available subcommands.
 
 ```
-kubeadm alpha certs renew [flags]
+kubeadm certs renew [flags]
 ```
 
 ### Options

content/en/docs/reference/setup-tools/kubeadm/generated/kubeadm_certs_renew_admin.conf.md

@@ -11,7 +11,7 @@ Renewal by default tries to use the certificate authority in the local PKI manag
 After renewal, in order to make changes effective, is required to restart control-plane components and eventually re-distribute the renewed certificate in case the file is used elsewhere.
 
 ```
-kubeadm alpha certs renew admin.conf [flags]
+kubeadm certs renew admin.conf [flags]
 ```
 
 ### Options

content/en/docs/reference/setup-tools/kubeadm/generated/kubeadm_certs_renew_all.md

@@ -5,7 +5,7 @@
 Renew all known certificates necessary to run the control plane. Renewals are run unconditionally, regardless of expiration date. Renewals can also be run individually for more control.
 
 ```
-kubeadm alpha certs renew all [flags]
+kubeadm certs renew all [flags]
 ```
 
 ### Options

content/en/docs/reference/setup-tools/kubeadm/generated/kubeadm_certs_renew_apiserver-etcd-client.md

@@ -11,7 +11,7 @@ Renewal by default tries to use the certificate authority in the local PKI manag
 After renewal, in order to make changes effective, is required to restart control-plane components and eventually re-distribute the renewed certificate in case the file is used elsewhere.
 
 ```
-kubeadm alpha certs renew apiserver-etcd-client [flags]
+kubeadm certs renew apiserver-etcd-client [flags]
 ```
 
 ### Options

content/en/docs/reference/setup-tools/kubeadm/generated/kubeadm_certs_renew_apiserver-kubelet-client.md

@@ -11,7 +11,7 @@ Renewal by default tries to use the certificate authority in the local PKI manag
 After renewal, in order to make changes effective, is required to restart control-plane components and eventually re-distribute the renewed certificate in case the file is used elsewhere.
 
 ```
-kubeadm alpha certs renew apiserver-kubelet-client [flags]
+kubeadm certs renew apiserver-kubelet-client [flags]
 ```
 
 ### Options

content/en/docs/reference/setup-tools/kubeadm/generated/kubeadm_certs_renew_apiserver.md

@@ -11,7 +11,7 @@ Renewal by default tries to use the certificate authority in the local PKI manag
 After renewal, in order to make changes effective, is required to restart control-plane components and eventually re-distribute the renewed certificate in case the file is used elsewhere.
 
 ```
-kubeadm alpha certs renew apiserver [flags]
+kubeadm certs renew apiserver [flags]
 ```
 
 ### Options

content/en/docs/reference/setup-tools/kubeadm/generated/kubeadm_certs_renew_controller-manager.conf.md

@@ -11,7 +11,7 @@ Renewal by default tries to use the certificate authority in the local PKI manag
 After renewal, in order to make changes effective, is required to restart control-plane components and eventually re-distribute the renewed certificate in case the file is used elsewhere.
 
 ```
-kubeadm alpha certs renew controller-manager.conf [flags]
+kubeadm certs renew controller-manager.conf [flags]
 ```
 
 ### Options

content/en/docs/reference/setup-tools/kubeadm/generated/kubeadm_certs_renew_etcd-healthcheck-client.md

@@ -11,7 +11,7 @@ Renewal by default tries to use the certificate authority in the local PKI manag
 After renewal, in order to make changes effective, is required to restart control-plane components and eventually re-distribute the renewed certificate in case the file is used elsewhere.
 
 ```
-kubeadm alpha certs renew etcd-healthcheck-client [flags]
+kubeadm certs renew etcd-healthcheck-client [flags]
 ```
 
 ### Options

content/en/docs/reference/setup-tools/kubeadm/generated/kubeadm_certs_renew_etcd-peer.md

@@ -11,7 +11,7 @@ Renewal by default tries to use the certificate authority in the local PKI manag
 After renewal, in order to make changes effective, is required to restart control-plane components and eventually re-distribute the renewed certificate in case the file is used elsewhere.
 
 ```
-kubeadm alpha certs renew etcd-peer [flags]
+kubeadm certs renew etcd-peer [flags]
 ```
 
 ### Options

content/en/docs/reference/setup-tools/kubeadm/generated/kubeadm_certs_renew_etcd-server.md

@@ -11,7 +11,7 @@ Renewal by default tries to use the certificate authority in the local PKI manag
 After renewal, in order to make changes effective, is required to restart control-plane components and eventually re-distribute the renewed certificate in case the file is used elsewhere.
 
 ```
-kubeadm alpha certs renew etcd-server [flags]
+kubeadm certs renew etcd-server [flags]
 ```
 
 ### Options

content/en/docs/reference/setup-tools/kubeadm/generated/kubeadm_certs_renew_front-proxy-client.md

@@ -11,7 +11,7 @@ Renewal by default tries to use the certificate authority in the local PKI manag
 After renewal, in order to make changes effective, is required to restart control-plane components and eventually re-distribute the renewed certificate in case the file is used elsewhere.
 
 ```
-kubeadm alpha certs renew front-proxy-client [flags]
+kubeadm certs renew front-proxy-client [flags]
 ```
 
 ### Options

content/en/docs/reference/setup-tools/kubeadm/generated/kubeadm_certs_renew_scheduler.conf.md

@@ -11,7 +11,7 @@ Renewal by default tries to use the certificate authority in the local PKI manag
 After renewal, in order to make changes effective, is required to restart control-plane components and eventually re-distribute the renewed certificate in case the file is used elsewhere.
 
 ```
-kubeadm alpha certs renew scheduler.conf [flags]
+kubeadm certs renew scheduler.conf [flags]
 ```
 
 ### Options