[Nginx] Add proxy_send_timeout and proxy_read_timeout of 300 to /SOGo

data/conf/nginx/includes/site-defaults.conf

@@ -177,6 +177,8 @@
     proxy_set_header x-webobjects-server-name $server_name;
     proxy_set_header x-webobjects-server-url $client_req_scheme://$http_host;
     proxy_set_header x-webobjects-server-port $server_port;
+    proxy_send_timeout 300;
+    proxy_read_timeout 300;
     client_body_buffer_size 128k;
     client_max_body_size 0;
     break;