do not purge sudoers file

modules/joule/manifests/config.pp

@@ -85,6 +85,10 @@ class joule::config {
   }
 
   #allow joule user to control the joule service (start|restart|status)
+  class { 'sudo':
+    purge => false,
+    config_file_replace => false,
+  }			
   sudo::conf {'joule':
     ensure => present,
     source => 'puppet:///modules/joule/sudoers'