Don't use options for newer nginx
diff --git a/ceph/files/nginx.conf b/ceph/files/nginx.conf
index 7fee2cb..af38fd8 100644
--- a/ceph/files/nginx.conf
+++ b/ceph/files/nginx.conf
@@ -9,8 +9,9 @@
 
   client_max_body_size {{ site.client_max_body_size|default('10g') }};
 
-  fastcgi_request_buffering off;
-  fastcgi_buffering off;
+  # Following options are available only in nginx 1.7<
+  # fastcgi_request_buffering off;
+  # fastcgi_buffering off;
 
   location / {
     fastcgi_pass_header Authorization;