Comment loadbalancer_* settings in sample inventory (#4566)

inventory/sample/group_vars/all/all.yml

@@ -20,8 +20,9 @@ bin_dir: /usr/local/bin
 #   port: 1234
 
 ## Internal loadbalancers for apiservers
-loadbalancer_apiserver_localhost: true
-loadbalancer_apiserver_type: haproxy
+# loadbalancer_apiserver_localhost: true
+# valid options are "nginx" or "haproxy"
+# loadbalancer_apiserver_type: nginx # valid values "nginx" or "haproxy"
 
 ## Local loadbalancer should use this port
 ## And must be set port 6443