Planning: restored previous reference line smoother params.

modules/planning/common/planning_gflags.cc

@@ -58,7 +58,7 @@ DEFINE_double(look_forward_extend_distance, 50,
 DEFINE_double(reference_line_stitch_overlap_distance, 20,
               "The overlap distance with the existing reference line when "
               "stitching the existing reference line");
-DEFINE_double(reference_line_lateral_buffer, 0.4,
+DEFINE_double(reference_line_lateral_buffer, 0.5,
               "When creating reference line, the minimum distance with road "
               "curb for a vehicle driving on this line.");
 DEFINE_double(prepare_rerouting_time, 2.0,

modules/planning/conf/planning_config.pb.txt

@@ -182,8 +182,8 @@ qp_spline_reference_line_smoother_config {
     max_constraint_interval : 5.0
     longitudinal_boundary_bound: 2.0
     lateral_boundary_bound: 0.25
-    second_derivative_weight: 1000.0
-    third_derivative_weight: 0.0
+    second_derivative_weight: 200.0
+    third_derivative_weight: 1000.0
     num_of_total_points: 500
     regularization_weight: 1.0e-5
 }