add buffer size to proxy_site.j2 template; update proxy_site_defs.yml as a result

defaults/main/proxy_site_defs.yml

@@ -2,8 +2,8 @@
   proxy_package_list  : ['nginx','git']
   proxy_site_conf_dir : /etc/nginx/conf.d
   proxy_site_file     : "{{ proxy_site_conf_dir }}/zen_proxy.conf"
-  proxy_site_version  : 1.8
-  proxy_site_revision : 20200515-172338
+  proxy_site_version  : 1.9
+  proxy_site_revision : 22317-1
 
 
   proxy_site_log_path    : /proxy_logs

templates/proxy_site.j2

@@ -63,6 +63,12 @@ location /nginx_status {
 
     # re-write redirects to http as to https
     proxy_redirect http:// https://;
+
+
+    # set buffer sizes (for keycloak user reg)
+    proxy_buffer_size 128k;
+    proxy_buffers 4 256k;
+    proxy_busy_buffers_size 256k;
   }
 
 {% if item.key == "seafile.thezengarden.net" %}