SimpleConnect: test EAP-GTC authentication for PEAP and TTLS

Test client connection using EAP-GTC authentication inside a TLS tunnel created
by TTLS and PEAP.

BUG=chromium:472954
TEST=run network_WiFi_SimpleConnect.wifi_check1x_PEAP and
     network_WiFi_SimpleConnect.wifi_check1x_TTLS

Change-Id: I574206cf225fb3072350caa1e6f6ba9c0900dd69
Reviewed-on: https://chromium-review.googlesource.com/264012
Trybot-Ready: Zeping Qiu <zqiu@chromium.org>
Tested-by: Zeping Qiu <zqiu@chromium.org>
Reviewed-by: Paul Stewart <pstew@chromium.org>
Commit-Queue: Zeping Qiu <zqiu@chromium.org>
3 files changed