Adds colcon ignore in order to ignore ROS1 packages from colcon build in ROS2

[jrgnicho]

No description provided.

[Levi-Armstrong]

Doesn't Colcon also build ROS1 packages?

[jrgnicho]

@Levi-Armstrong it errors out whenever it finds any catkin related commands in the CMakeLists.txt. This change would allow to build the pure cmake packages in a colcon ROS2 workspace.

[Levi-Armstrong]

I believe the reason it errors out using colcon is because the package.xml has not been updated to format 2 and it needs the <build_type>catkin</build_type> added.

[jrgnicho]

It would still fail in a ROS2 workspace because the ROS1 libraries aren't part of that environment

[jrgnicho]

Furthermore, in a colcon ROS2 ws that also uses tesseract_ros2 there will be conflicting packages because they're named the same as those in tesseract/tesseract_ros

[Levi-Armstrong]

Lets discuss further on issue #207.

[mpowelson]

@Levi-Armstrong Until #207 is implemented, can we just COLCON_IGNORE tesseract_ros and tesseract_python? Having these in here is making CI problematic.

[mpowelson]

@Levi-Armstrong ping

[Levi-Armstrong]

@jrgnicho Can you rebase? I think it should fix CI to get this merged.

[mpowelson]

I think we'll have to ignore tesseract_python as well since it uses tesseract_rosutils

[jrgnicho]

@Levi-Armstrong I just rebased

[Levi-Armstrong]

@jrgnicho Something is still not happy.

[mpowelson]

I don't think this is going to work. I thought that catkin only obeyed CATKIN_IGNORE, but colcon ignored all. That does not appear to be the case. See HERE linked from THIS issue which I see Jorge is a part of. Perhaps we should just add a check to the package.xml/cmake like we do in yak_ros?

It looks like it doesn't like that we are trying to run tests on tesseract_ros_examples using PKGS_DOWNSTREAM.

[mpowelson]

This has been replaced by #241