Add debug logs to CaptivePortalTests

The point is to help with debugging flakes of this test by
clarifying the timing of these calls with respect to when
NetworkMonitor reads the settings and the values it obtains.

Test: CaptivePortalTest
Change-Id: I29ac1d8cff1f96c91be2459e9a8f34f8ba1f38e3
1 file changed