Add reverse-proxy example in test-nginx.conf (#1023)

_example/etc/test-nginx.conf

@@ -23,8 +23,17 @@ server {
 
   # Client requests
   location / {
+    # Local application
     index index.pl;
     try_files $uri $uri/ =404;
+
+    # Reverse proxy
+    #proxy_pass http://remote.server/;
+    #include /etc/nginx/proxy_params;
+
+    ##################################
+    # CALLING AUTHENTICATION         #
+    ##################################
     auth_request /lmauth;
     auth_request_set $lmremote_user $upstream_http_lm_remote_user;
     auth_request_set $lmlocation $upstream_http_location;