autotest: SimpleConnect test using apmanager

Verify client IP connectivity with an AP service provided by
apmanager.

BUG=chromium:442187
TEST=Run this test

Change-Id: I8dd771516bf13e21f3cb02bc417918863d9792a3
Reviewed-on: https://chromium-review.googlesource.com/236756
Reviewed-by: Christopher Wiley <wiley@chromium.org>
Commit-Queue: Peter Qiu <zqiu@chromium.org>
Tested-by: Peter Qiu <zqiu@chromium.org>
3 files changed