CLI option for specifying User Agent

[Freedmont]

In our SAML environment we use the User-Agent to determine if forms based auth is going to be allowed or if something else will be required. I would like to be able to pass the desired User-Agent as a command line option.

[JordonPhillips]

This sounds like a good idea. The user-agent is a pretty common source of metrics and occasionally filtering, so I could see several uses for it.