The [Data Type](https://github.com/voxpupuli/puppet-nginx/blob/6a4657e7319136e563479b8fab5bf83a2ab6e36d/manifests/init.pp#L86) specified for 'http_cfg_append only' allows Hash and Array but the [ERB template](https://github.com/voxpupuli/puppet-nginx/blob/master/templates/conf.d/nginx.conf.erb#L188) only handles Hash containing Array.
The Data Type specified for 'http_cfg_append only' allows Hash and Array but the ERB template only handles Hash containing Array.