ctp: add test to CtpData

Signed-off-by: Zhengwang Ruan <ruan.zhengwang@gmail.com>
strategy:futures/turtle: add method to switch on CTP

1) add method to switch on CTP.
2) update __init__ for both Futures and Turtle to adjust CTP.

Signed-off-by: Zhengwang Ruan <ruan.zhengwang@gmail.com>