Bug report

• Ubuntu16.04
• Version or commit hash: master

Steps to reproduce issue

bring up a robot and send goal to the spin action server

ros2 action send_goal /spin nav2_msgs/action/Spin "target_yaw: 3.14"

Expected behavior

based on the description, I would expect it turns backward and then stops if you give 3.14 and turn around with 6.28

Spin performs an in-place rotation by a given angle.

Actual behavior

It keeps rotating if you give a number bigger/smaller than around M_PI/-M_PI