dsh: set TURN settings in ConnectionManager config

The settings (host, username, password, realm) required to use TURN with
dsh were passed to the Dsh constructor but not set in the
ConnectionManger config.

GitLab: #634
Change-Id: Ib6619265fda1d20be83032f83798ea92d13616fc

tools/dsh/dsh.cpp

@@ -106,7 +106,11 @@ dhtnet::Dsh::Dsh(dht::crypto::Identity identity,
                                           logger,
                                           certStore,
                                           ioContext,
-                                          iceFactory);
+                                          iceFactory,
+                                          turn_host,
+                                          turn_user,
+                                          turn_pass,
+                                          turn_realm);
     // create a connection manager
     connectionManager = std::make_unique<ConnectionManager>(std::move(config));