autotest: Enable WPA/WPA2 encryption in new WiFi tests

TEST=A test depending on this change and using WPA encryption passes
when the correct password is given, and fails when an incorrect password
is given.
BUG=chromium:245816

Change-Id: If1370bbbd7b41aaeec066920d0810dc0a7cf716d
Reviewed-on: https://gerrit.chromium.org/gerrit/58872
Reviewed-by: Christopher Wiley <wiley@chromium.org>
Tested-by: Christopher Wiley <wiley@chromium.org>
Commit-Queue: Christopher Wiley <wiley@chromium.org>
1 file changed