autotest: Add more variety to the WEP keys we test with

This lets us remove the tests around the variety of WEP keys the manager
supports.

TEST=This is a test.  It passes.
BUG=chromium:259487

Change-Id: Id5995fe2956dc04fca93b27a23e9488a951e7364
Reviewed-on: https://gerrit.chromium.org/gerrit/61671
Tested-by: Christopher Wiley <wiley@chromium.org>
Reviewed-by: Paul Stewart <pstew@chromium.org>
Commit-Queue: Christopher Wiley <wiley@chromium.org>
7 files changed