autotest: Migrate network_WiFiSecMat/013CheckWPA_Mixed to new framework

TEST=This is a test.  It passes.
BUG=chromium:251389

Change-Id: I3e000766fa586704dbd4ecdceccfc3e67925a82b
Reviewed-on: https://gerrit.chromium.org/gerrit/59310
Tested-by: Christopher Wiley <wiley@chromium.org>
Reviewed-by: Tan Gao <tgao@chromium.org>
Commit-Queue: Christopher Wiley <wiley@chromium.org>
2 files changed