autotest: Migrate network_WiFiMatFunc/011CheckIBSS to new framework

TEST=This is a test, it passes.  In addition, running 011CheckIBSS still
passes with the modifications to site_wifitest.  check11b also passes.
BUG=chromium:245907
CQ-DEPEND=CL:57385

Change-Id: Ibd370bfb5e0fd21e3bce084834e8f38a8512422d
Reviewed-on: https://gerrit.chromium.org/gerrit/57386
Tested-by: Christopher Wiley <wiley@chromium.org>
Reviewed-by: Paul Stewart <pstew@chromium.org>
Commit-Queue: Christopher Wiley <wiley@chromium.org>
8 files changed