Don't try to include sources for jenkins apt repo.

Change-Id: Iaa53dc84c5ab6e17b6155c0c0f1c4c12ea276959
Reviewed-on: https://review.openstack.org/10983
Approved: Monty Taylor <mordred@inaugust.com>
Reviewed-by: Monty Taylor <mordred@inaugust.com>
Tested-by: Jenkins

modules/jenkins_master/manifests/init.pp

@@ -19,6 +19,7 @@ class jenkins_master($site, $serveradmin, $logo,
     release => "binary/",
     repos => "",
     require => Apt::Key['jenkins'],
+    include_src => false,
   }
 
   file { '/etc/apache2/sites-available/jenkins':