[planning] GetReferencePoint: use start point and end point when s is out of range
[planning] GetReferencePoint: use start point and end point when s is out of range

startcode/apollo,fy2462/apollo,fy2462/apollo,fy2462/apollo,startcode/apollo,fy2462/apollo,startcode/apollo,fy2462/apollo,startcode/apollo,fy2462/apollo,startcode/apollo,startcode/apollo