planning: fix obstacle init crash and enable DP Path optimizer by default.

modules/planning/common/frame.cc

@@ -72,7 +72,8 @@ void Frame::CreatePredictionObstacles(
   std::list<std::unique_ptr<Obstacle> > obstacles;
   Obstacle::CreateObstacles(prediction, &obstacles);
   for (auto &ptr : obstacles) {
-    obstacles_.Add(ptr->Id(), std::move(ptr));
+    auto id(ptr->Id());
+    obstacles_.Add(id, std::move(ptr));
   }
 }
 

modules/planning/conf/planning_config.pb.txt

 planner_type : EM em_planner_config {
 
-# optimizer : DP_POLY_PATH_OPTIMIZER
-# optimizer : DP_ST_SPEED_OPTIMIZER
+    optimizer : DP_POLY_PATH_OPTIMIZER
+    # optimizer : DP_ST_SPEED_OPTIMIZER
 
-optimizer : QP_SPLINE_PATH_OPTIMIZER
-optimizer : QP_SPLINE_ST_SPEED_OPTIMIZER
+    optimizer : QP_SPLINE_PATH_OPTIMIZER
+    optimizer : QP_SPLINE_ST_SPEED_OPTIMIZER
 
 }