Upgrade to ros/groovy

  1. Robot description file are now installed. The package does not
     rely anymore on ROS machinery to locate files from package name.
     Instead, the directory where the data relative to the robot are
     installed has been added as an argument of
     hpp::model::urdf::loadRobotModel.
  2. Optional dependency to romeo_description is triggered when corresponding
     test is enabled.
Use hpp-util logging machinery
Fix file names

  URL is expected not simply file name.