Signal usage of shard-aware driver

Author: jul-stas

src/cluster.cpp

@@ -25,6 +25,8 @@
 #include "speculative_execution.hpp"
 #include "utils.hpp"
 
+#include <iostream>
+
 using namespace datastax;
 using namespace datastax::internal::core;
 
@@ -235,6 +237,8 @@ Cluster::Cluster(const ControlConnection::Ptr& connection, ClusterListener* list
     , local_dc_(local_dc)
     , supported_options_(supported_options)
     , is_recording_events_(settings.disable_events_on_startup) {
+  std::cout << "===== Using optimized driver!!! =====\n";
+
   inc_ref();
   connection_->set_listener(this);