Configuration and DDS example/tools updates

- Update DDS example command UI and extract it from example.
 - Unify address handling via DDS properties for dynamic deployment.
 - Update DDS docs with the new approach.
 - Allow `--config-key` to be used to access common config in JSON.
 - Allow common channel properties to be specified for all sockets.
 - Update MQ examples and Tuto3 with new config options.
 - Add start scripts to MQ examples for easier use.

fairmq/nanomsg/FairMQSocketNN.cxx

@@ -16,6 +16,12 @@
 #include "FairMQMessageNN.h"
 #include "FairMQLogger.h"
 
+#include <nanomsg/nn.h>
+#include <nanomsg/pipeline.h>
+#include <nanomsg/pubsub.h>
+#include <nanomsg/reqrep.h>
+#include <nanomsg/pair.h>
+
 #include <sstream>
 #ifdef MSGPACK_FOUND
 #include <msgpack.hpp>