fix C++ client test to execute correct server (fix #959)
fix C++ client test to execute correct server (fix #959)

jubatus/jubatus,elkingtonmcb/jubatus,gintenlabo/jubatus,rimms/jubatus,roselleebarle04/jubatus,jubatus/jubatus,mathn/jubatus,jubatus/jubatus,roselleebarle04/jubatus,rimms/jubatus,gintenlabo/jubatus,mathn/jubatus,elkingtonmcb/jubatus