in process http stub server for use as an tell/ask stub service for stubbing external apis.
doesn't currently work
Based on things like this:
https://dzone.com/articles/handling-http-404-error-aspnet
http://www.asp.net/web-api/overview/hosting-aspnet-web-api/use-owin-to-self-host-web-api
http://stackoverflow.com/questions/25090211/owin-httplistener-not-located