Replaced gazebo_ros_control by gazebo_ros2_control

[vonunwerth]

Description

When using the tags generated in the package.xml for the use of Gazebo Classic, rosdep failed because it could not find the package gazebo_ros_control.

ERROR: the following packages/stacks could not have their rosdep keys resolved to system dependencies: ...: Cannot locate rosdep definition for [gazebo_ros_control]

I changed the template for the package.xml to include gazebo_ros2_control

It could also be useful to include a second commented paragraph containing gz_ros2_control for Gazebo.

Checklist

• Required by CI: Code is auto formatted using clang-format
• Extend the tutorials / documentation reference
• Document API changes relevant to the user in the MIGRATION.md notes
• Create tests, which fail without this PR reference
• Include a screenshot if changing a GUI
• While waiting for someone to review your request, please help review another open pull request to support the maintainers

[scastro-bdai]

Gazebo classic is no longer supported in Jazzy and onwards... so if anything, this should be gz_ros2_control. But we'd need to know if Gazebo Sim even works with these tools...

[sjahr]

@vonunwerth Thanks for that PR, I'll close this for now because of Sebastian's comment + moveit2 shouldn't depend on it anyways