[feat] dont use backports for passenger anymore

puppet/modules/site_apt/manifests/preferences/passenger.pp

-#
-# currently, this is only used by static_site to get passenger v4.
-#
-# UPGRADE: this is not needed for jessie.
-#
-class site_apt::preferences::passenger {
-
-  apt::preferences_snippet { 'passenger':
-    package  => 'libapache2-mod-passenger',
-    release  => "${::lsbdistcodename}-backports",
-    priority => 999;
-  }
-
-}

puppet/modules/site_config/manifests/remove/jessie.pp

@@ -7,7 +7,7 @@ class site_config::remove::jessie {
   }
 
   apt::preferences_snippet {
-    [ 'facter', 'obfsproxy', 'python-twisted', 'unbound' ]:
+    [ 'facter', 'obfsproxy', 'python-twisted', 'unbound', 'passenger' ]:
       ensure => absent;
   }