(hrpsys_ros_bridge) Fix 523 (build failure on Groovy)

`pr2_controllers_msgs` is [a wet package in Hydro](http://www.ros.org/debbuild/hydro.html?q=pr2_controllers_msgs). So [this commit](https://github.com/start-jsk/rtmros_common/commit/fd53eb8c0f98e6eee7bdae13893d4310db5323b6#diff-53d40a4825a039da2baee20437143dbaR12) might be causing the error in question?