ROS pre-release test failed for Indigo and Kinetic. Failures occurred in downstream tests. And pre-release test succeeded for Lunar and Melodic. This means that the package itself is good (I guess Lunar and Melodic went fine because the failing downstream package is likely not released).
This addresses an issue https://github.com/ros-drivers/openni_camera/issues/68#issuecomment-420883390
This includes #69 to make sure CI passes for ROS Melodic.
Will merge once CI passes.