Fix failure to build by using rcpputils instead of pluginlib impl

[sloretz]

Fixes failure to build caused by pluginlib's implementation changing:
ros/pluginlib#212

Note for reviewer: this fix is also required to build on my machine ament/ament_cmake#318

Signed-off-by: Shane Loretz sloretz@openrobotics.org
Signed-off-by: Shane Loretz sloretz@osrfoundation.org

[clalancette]

Hm, should this PR be necessary? That is, as far as I know I only put the change to use rcpputils on the ros2 branch of pluginlib, not on the foxy branch. I deliberately did that because ros/pluginlib#212 was an API break.

Additionally, as far as I can tell foxy builds correctly right now. At least, I did a build this morning and it all seemed to build. @sloretz can you give a bit more information on where the need for this PR came from?

[sloretz]

Additionally, as far as I can tell foxy builds correctly right now. At least, I did a build this morning and it all seemed to build. @sloretz can you give a bit more information on where the need for this PR came from?

Gah, I closed the wrong PR 🤦 ament/ament_cmake#318 (comment)

[sloretz]

can you give a bit more information on where the need for this PR came from?

The PR came from pulling changes to my ROS 2 workspace, but not re-importing the latest ros2.repos file. It still listed this repo's foxy-devel branch. My mistake combined with a quirk of our git branching strategy.