feat(behavior_velocity_planner): change walkway stop line distance (#350

)

feat(behavior_velocity_planner): change walkway stop line distance margin

Signed-off-by: Makoto Kurihara <mkuri8m@gmail.com>
Signed-off-by: Tomohito Ando <tomohito.ando@tier4.jp>

autoware_launch/config/planning/scenario_planning/lane_driving/behavior_planning/behavior_velocity_planner/walkway.param.yaml

@@ -2,4 +2,4 @@
   ros__parameters:
     walkway:
       stop_duration: 0.1 # [s] stop time at stop position
-      stop_distance_from_crosswalk: 3.5 # [m] make stop line away from crosswalk when no explicit stop line exists
+      stop_distance_from_crosswalk: 1.5 # [m] make stop line away from crosswalk when no explicit stop line exists