needed to subscribe to "statistics"

git-svn-id: svn://bind10.isc.org/svn/bind10/branches/f2f200910@271 e5f2f494-b856-4b98-b285-d166d9295462

src/bin/parkinglot/ccsession.cc

@@ -43,6 +43,8 @@ CommandSession::getCommand() {
     ISC::Data::ElementPtr cmd, routing, data, ep;
     string s;
 
+    session.subscribe("statistics");
+
     session_.group_recvmsg(routing, data, false);
     cmd = data->get("command");