Issue 3686 - Replace sitescripts exec- with class-reference in class downloadserver

modules/downloadserver/manifests/init.pp

 class downloadserver(
     $domain,
     $certificate,
     $private_key,
     $is_default = false
   ) {
 
   class {'nginx':
     worker_connections => 4000,
     ssl_session_cache => off,
   }
 
   class {'sitescripts':
     sitescriptsini_source => 'puppet:///modules/downloadserver/sitescripts',
   }
 
   package {['python-flup', 'python-jinja2']:}
   include spawn-fcgi
 
   spawn-fcgi::pool {'multiplexer':
     ensure => present,
     fcgi_app => '/opt/sitescripts/multiplexer.fcgi',
     socket => '/tmp/multiplexer-fastcgi.sock',
     mode => '0666',
     user => 'nginx',
     children => 1,
     require => [
-      Exec['fetch_sitescripts'],
+      Class['sitescripts'],
       Package['python-flup', 'python-jinja2'],
     ],
   }
 
   user {'hg':
     ensure => present,
     comment => 'Mercurial client user',
     home => '/home/hg',
     managehome => true
   }
@@ skipping 85 matching lines @@
     require => [File['/home/rsync/.ssh/known_hosts'],
                 File['/home/rsync/.ssh/id_rsa'],
                 File['/var/www/devbuilds']],
     command => 'rsync -e ssh -ltprz --delete devbuilds@ssh.adblockplus.org:. /var/www/devbuilds',
     environment => hiera('cron::environment', []),
     user => rsync,
     hour => '*',
     minute => '4-54/10'
   }
 }