yocto_recipe.py: Use sensible default for <build_type> when not ROS 1 (#267)
yocto_recipe.py: Use sensible default for <build_type> when not ROS 1 (#267)

* It only makes sense for the default value for <build_type> to be
  "catkin" for ROS 1 distros. For others, use "ament_cmake".

Signed-off-by: Martin Jansa <77d25b640e536c950b8ae8cdd4f0574e3b263d04@lge.com>
ros-infrastructure/superflore,ros-infrastructure/superflore