Include device ID in the zeromq socket identity.

For request sockets in ZeroMQ the socket identity must be unique, otherwise multiple clients will be rejected.
Update the tests to test this use case.

fairmq/test/req-rep/FairMQTestReq.cxx

@@ -29,7 +29,7 @@ void FairMQTestReq::Run()
     std::unique_ptr<FairMQMessage> reply(NewMessage());
     if (Receive(reply, "data") >= 0)
     {
-        LOG(INFO) << "REQ-REP test successfull";
+        LOG(INFO) << "received reply";
     }
 }