Add some warning information about deprecating non-kubeadm code (#3759)

inventory/sample/group_vars/all/all.yml

@@ -48,6 +48,9 @@ bin_dir: /usr/local/bin
 ## kubeadm deployment mode
 kubeadm_enabled: true
 
+# Skip alert information
+skip_non_kubeadm_warning: false
+
 ## Set these proxy values in order to update package manager and docker daemon to use proxies
 #http_proxy: ""
 #https_proxy: ""