Issue 2185 - Migrate Rieveld superuser creation to fixture

modules/rietveld/manifests/init.pp

 class rietveld(
     $domain,
     $certificate,
     $private_key,
     $is_default = false,
     $fixtures = hiera('rietveld::fixtures', {}),
   ) inherits private::rietveld {
 
   include nginx
   $django_home = '/home/rietveld/django-gae2django'
@@ skipping 63 matching lines @@
     target => '/lib/init/upstart-job',
     require => [File['/etc/init/rietveld.conf'], Exec['install_rietveld']]
   }
 
   service {'rietveld':
     ensure => running,
     hasstatus => false,
     require => [Package['gunicorn'], File['/etc/init.d/rietveld']]
   }
 
-  exec {'set_superuser':
-    command => "echo \"from django.db import DEFAULT_DB_ALIAS as database; from django.contrib.auth.models import User; User.objects.db_manager(database).create_superuser('admin', 'admins@adblockplus.org', '${admin_password}')\" | ./manage.py shell",
-    cwd => "${rietveld_home}",
-    require => Exec['install_rietveld'],
-  }
-
   file {"${rietveld_home}/fixtures":
     ensure => directory,
     owner => 'rietveld',
     mode => 0750,
     require => Exec['install_rietveld'],
   }
 
   define fixture(
     $ensure = present,
     $source = undef,
@@ skipping 21 matching lines @@
       mode => 0640,
       notify => $ensure ? {
         present => Exec[$destination],
         default => [],
       }
     }
   }
 
   create_resources(rietveld::fixture, $fixtures)
 }