WifiWakeTest: scan before turning wifi off for more tests

If we don't scan before turning wifi off, it is possible
that Wifi Wake will use stale scan results containing
the APs that we have turned off already.

This was fixed for test_reconnect_to_better_saved_network,
now fix it for the other affected tests.

Bug: 160540443
Test: in continuous runs
Change-Id: Id7d08bbd8d36f8222e69cc95e5cb39b6ab3f084a
1 file changed
tree: 8c418fa1235426ccd7a504c5bfd2b66812636366
  1. acts/
  2. tools/
  3. wts-acts/
  4. Android.mk
  5. OWNERS
  6. PREUPLOAD.cfg