ROS 2 Dashing improvement: Reenable some pieces of logging

[clalancette]

The current ROS 2 Dashing code disables some of the logging because it wasn't clear the best way to pass the necessary logging pointer to where it is needed. https://github.com/ros-drivers/velodyne/blob/dashing-devel/velodyne_pointcloud/src/lib/rawdata.cc#L101 is an example. This should be reconsidered and passed, then we can re-enable the logging.