autotest: Add WEP support for WpaCliProxy

While here, add support for spaces in WPA passphrases.

TEST=wifi_checkWPA2 and wifi_checkWEP104 both pass on WpaCliProxy
and XmlrpcProxy hosts.
BUG=chromium:302855

Change-Id: I5b75ebcc4bd990de9512cbb60173fc47dd3f3752
Reviewed-on: https://chromium-review.googlesource.com/171808
Reviewed-by: Christopher Wiley <wiley@chromium.org>
Tested-by: Christopher Wiley <wiley@chromium.org>
Commit-Queue: Christopher Wiley <wiley@chromium.org>
1 file changed