debian: update nginx-example.conf to redirect non-ssl requests (#22779)

debian/nginx-example.conf

@@ -38,21 +38,5 @@ server {
         access_log  /var/log/nginx/combo.example.org-access.log combined;
         error_log  /var/log/nginx/combo.example.org-error.log;
 
-        location ~ ^/static/(.+)$ {
-            root /;
-            try_files /var/lib/combo/tenants/$host/static/$1
-                      /var/lib/combo/collectstatic/$1
-                      =404;
-        }
-
-        location ~ ^/media/(.+)$ {
-            alias /var/lib/combo/tenants/$host/media/$1;
-        }
-
-        location / {
-            proxy_pass         http://unix:/var/run/combo/combo.sock;
-            proxy_set_header   Host $http_host;
-            proxy_set_header   X-Real-IP       $remote_addr;
-            proxy_set_header   X-Forwarded-For $proxy_add_x_forwarded_for;
-        }
+        return 302 https://$host$request_uri;
 }