prediction: change map_info range to 100.0 meters

Change-Id: If5372026475f3847c69abb515b7146b83340b513

Author: fuyiqun

modules/prediction/common/prediction_system_gflags.cc

@@ -95,7 +95,7 @@ DEFINE_string(prediction_target_dir, "/apollo/data/train/",
 DEFINE_double(obstacle_x, 0.0, "obstacle position x");
 DEFINE_double(obstacle_y, 0.0, "obstacle position y");
 DEFINE_double(obstacle_phi, 0.0, "obstacle heading phi");
-DEFINE_double(road_distance, 141.4,
+DEFINE_double(road_distance, 100.0,
               "road distance within which the points are got");
 DEFINE_double(point_distance, 5.0,
               "sampling distance of two points");