delete '/' to sync tf2

[routiful]

To support tf2, I deleted slash in front of topic name where it had set in global and local costmap param.yaml.

ros-planning/navigation#794

[garyedwards]

Hey do you know when this will land on the release build servers? At the moment in our workshops we have to build from source or patch the installed system files. Neither are that desirable since this fix works great.

[AAlon]

@ROBOTIS-Kayman @RyanJaehyunShim Could you guys please advise on the estimated release date for this fix^^?

[AAlon]

@robotpilot I'd appreciate it if you guys could advise on the timeline for bloom-releasing this package to get this fix out.

[robotpilot]

@AAlon Sorry for late. We are going to work on bloom-releasing today.

[robotpilot]

@AAlon FYI, the current state is as follows:
For ROS 1 Kinetic Kame:
-> ros/rosdistro#22058
-> https://github.com/ROBOTIS-GIT/turtlebot3/releases/tag/1.2.1
For ROS 1 Melodic Morenia:
-> ros/rosdistro#22059
-> https://github.com/ROBOTIS-GIT/turtlebot3/releases/tag/1.2.2