* initial commits around using any id servers
* add your own id server for admin area
* lots of refactoring, now instead of injecting IWebHostBuilder we just set the Ocelot base url as a configuration extension method..this means people can pass it in on the command line aswell as hardcode which is OK I guess, also can now use your own IdentityServer to authenticate admin area
* updated docs for #231
* some tests that hopefully bump up coverage
* hacked together load balancing reroutes in fileconfig
* some renaming and refactoring
* more renames
* hacked away the old config json
* test for issue 213
* renamed key
* dont share ports
* oops
* updated docs
* mvoed docs around
* port being used
* hacking around to work out why logging and request id isnt working
* pass request id into logger so it can be structured, removed a bunch of debug logging we dont need because diagnostic trace gets it
* changed config dependency
* always have tracing available
* made it so we dont need to pass config into services.AddOcelot anymore with .net core 2.0
* add test
* lots of changes relating to logging and request ids, also updated documentation
* fixed failing test i missed
