tab auth don't work

[rviscomi]

I contributed an article to the 2015 perf calendar about authentication that you might find useful: https://calendar.perfplanet.com/2015/usi...tication/. It's an excerpt from my book Using WebPageTest.

To summarize, use scripting like `setValue` and `submitForm` to manipulate the DOM, or `setCookie` to reuse an existing session. Personally, I prefer the cookie approach as it lets you have only one navigation in the test.

The Auth tab on WPT is for HTTP Basic Authentication. The web server needs to support this form of authentication, which it seems it does not.