allow recursion to be selectable for dns server

Author: detiber

manifests/init.pp

@@ -876,6 +876,7 @@
   $conf_node_custom_motd                = undef,
   $development_mode                     = false,
   $conf_nameserver_upstream_dns         = ['8.8.8.8'],
+  $conf_nameserver_allow_recursion      = false,
   $install_login_shell                  = false,
   $register_host_with_nameserver        = false,
   $update_network_conf_files            = true,

templates/named/named.conf.erb

@@ -14,7 +14,11 @@ options {
     statistics-file "/var/named/data/named_stats.txt";
     memstatistics-file "/var/named/data/named_mem_stats.txt";
     allow-query { any; };
+<% if scope.lookupvar('::openshift_origin::conf_nameserver_allow_recursion')-%>
+    recursion yes;
+<% else -%>
     recursion no;
+<% end -%>
 
     /* Path to ISC DLV key */
     bindkeys-file "/etc/named.iscdlv.key";