Include chomp packages in a dependency chain starting from moveit metapkg

[130s]

Description

Per my suggestion #1083 (comment) that is based on the discussion at ros-gbp/moveit-release#5 (comment), chomp packages will be included in the list of released packages.

For the chomp packages to be easily installed by just installing moveit (e.g. apt-get install ros-%DISTRO%-moveit), those packages need to be included in the dependency chain that's rooted from moveit. The change in this PR realizes that.

Checklist

• Required by CI: Code is auto formatted using clang-format
• Decide if this should be cherry-picked to other current ROS branches -> Should be ported to melodic. Not for older than Kinetic. See Release chomp in Kinetic ros-gbp/moveit-release#5 (comment)
• Extended the tutorials / documentation, if necessary reference -> No need as this is not feature/enhancement change.
• Include a screenshot if changing a GUI -> No GUI change.
• Document API changes relevant to the user in the moveit/MIGRATION.md notes -> No API change. See more at 2018 Fall Release Kinetic and Melodic #1083 (comment)
• Created tests, which fail without this PR reference -> I can't think of anything to test for this particular change.

[130s]

Cherry-picked to melodic-devel at 37def08