Revert "ctp:autopos: fix wrong flags used to close positions"

This reverts commit 9a67df7a232d162b0c5213c2a327c35cf8ccd474.
ctp:autopos: fix the exception while closing positions

Fix using the undefined close_position() in CtpAutoPosition,
but should use the same call defined in TraderAgent.

Signed-off-by: Zhengwang Ruan <ruan.zhengwang@gmail.com>
test:testctp: fix bad importings since moved to test subsystem

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