[ISSUE #928] Fix some cpp client bug and make logs cleaner

Author: lizhimins

cpp/source/rocketmq/ClientImpl.cpp

@@ -34,6 +34,7 @@
 #include "NamingScheme.h"
 #include "SessionImpl.h"
 #include "Signature.h"
+#include "StdoutHandler.h"
 #include "UtilAll.h"
 #include "absl/strings/numbers.h"
 #include "absl/strings/str_join.h"