Fix dependencies in package.xml

[clalancette]

Ensure that we depend on ament_cmake_ros as appropriate.

Signed-off-by: Chris Lalancette clalancette@openrobotics.org

[JWhitleyWork]

@clalancette - I'm actually not familiar. What's the difference between ament_cmake and ament_cmake_ros?

[clalancette]

@clalancette - I'm actually not familiar. What's the difference between ament_cmake and ament_cmake_ros?

Essentially, ament_cmake_ros adds a few defaults to ament_cmake that are more consistent for ROS nodes. Things like building shared libraries by default, etc. In the end, it is not super important whether we use ament_cmake or ament_cmake_ros, but the package.xml and CMakeLists.txt have to agree (otherwise you can get build failures on the buildfarm).