autotest: Check that bgscans actually work in network_WiFi_BgscanBackoff

In addition to checking that background scans do not impact foreground
traffic, check that the background scans will return expected results
when there is no foreground traffic.  This both assures us that our
bgscans are being obeyed by the kernel, and that the test code is
enabling bgscans correctly.

TEST=This test continues to pass against cros hosts.

Change-Id: Ic2a506a67fb944dbfc11876505847387da845df4
Reviewed-by: Christopher Wiley <>
Commit-Queue: Christopher Wiley <>
Tested-by: Christopher Wiley <>
1 file changed