Multirobot do not see each other

[ggari-robotnik]

git clone https://github.com/RobotnikAutomation/rb1_base_sim.git
cd rb1_base_sim
git checkout noetic-devel
export ROS_BU_PKG="rb1_base_sim_bringup"
export ROS_BU_LAUNCH="rb1_base_complete.launch launch_robot_a:=true amcl_and_mapserver_robot_a:=true move_base_robot_a:=true map_frame_a:=/map launch_robot_b:=true amcl_and_mapserver_robot_b:=true move_base_robot_b:=true map_frame_b:=/map launch_robot_c:=true amcl_and_mapserver_robot_c:=true move_base_robot_c:=true map_frame_c:=/map"

@ndiazrey could you check it out?

[afont3]

solved in pull request for rb1_common