The uwsgi module complains if you supply multiple params of the same name
If you have two rules like:
route-if => 'equal:${PATH_INFO};/static/public addheader:Access-Control-Allow-Origin: *',
route-if => 'equal:${HTTP_X_FORWARDED_PROTO};http redirect-permanent:https://${HTTP_HOST}${REQUEST_URI}'

It says, - ERROR duplicate parameter found in resource (duplicate_params).

This is legal for the uwsgi config, but our puppet module doesn't allow it.