Releasing Kinetic + Melodic was a nightmare due to chomp, which now is scattered around the whole repository creating many inter-dependencies between release packages.
I suggest to move all chomp-related source into a single folder, namely moveit_planners/chomp, which is then released as a meta-package moveit_planners_chomp.

• moveit_planners/chomp
• moveit_planners/chomp/chomp_interface
• moveit_planners/chomp/chomp_motion_planner
• moveit_ros/planning/planning_request_adapter_plugins/src/chomp_optimizer_adapter.cpp
  -> moveit_planners/chomp/chomp_optimizer_adapter
• moveit_experimental/collision_distance_field
  -> moveit_planners/chomp/collision_distance_field
• Are there more dependencies from moveit_experimental?

Then, we should get rid of moveit_experimental dependencies in those released packages and finally mark moveit_experimental to be not released again, i.e. reverting ros-gbp/moveit-release#6.

@raghavendersahdev If we agree on this approach, could you tackle this please?