Configure secret_token (assuming it`s actually used anywhere) and document other private settings

modules/discourse/manifests/init.pp

 class discourse inherits private::discourse {
   include postgresql::server
 
   postgresql::database {'discourse':}
 
   postgresql::role {'discourse':
     password_hash => 'vagrant',
     db => 'discourse',
     login => true,
     superuser => true
@@ skipping 142 matching lines @@
     type => 1,
     value => 'Eyeo'
   }
 
   discourse::sitesetting {'company_domain':
     ensure => present,
     type => 1,
     value => 'eyeo.com'
   }
 
+  discourse::sitesetting {'secret_token':
+    ensure => present,
+    type => 1,
+    value => $cookie_secret
+  }
+
   Discourse::Postactiontype <| |> {
     require => Exec['/usr/local/bin/init-discourse']
   }
 
   discourse::postactiontype {'bookmark':
     ensure => present,
     id => 1,
     position => 1
   }
 
@@ skipping 95 matching lines @@
     source => 'puppet:///modules/discourse/intraforum.adblockplus.org',
     enabled => true
   }
 
   file {'/etc/logrotate.d/nginx_intraforum.adblockplus.org':
     ensure => file,
     require => Nginx::Hostconfig['intraforum.adblockplus.org'],
     source => 'puppet:///modules/discourse/logrotate'
   }
 }