autotest: add network_WiFi_LinkMonitorFailure test
This test checks how fast the DUT detects the link failure when the
network link goes down (restarting the local server with a different
gateway IP), and how fast it reconnects back after the failure.
BUG=chromium:469761
TEST=Run this test
CQ-DEPEND=CL:264459
Change-Id: Ibf8c74f0361798b6f099ba9c9282d96d4b0d741c
Reviewed-on: https://chromium-review.googlesource.com/264457
Reviewed-by: Zeping Qiu <zqiu@chromium.org>
Commit-Queue: Zeping Qiu <zqiu@chromium.org>
Tested-by: Zeping Qiu <zqiu@chromium.org>
4 files changed