* #574 consolidate some code, man the config stuff is a mess!
* #574 just use the downstream re route and the key for caching http clients
* #574 added benchmark, i was suprised to learn using a complex type was faster than a string in benchmark .net dictionary tests, hey ho probably dont have enough data in the type...
* #296 renamed configuration.json to ocelot.json in preparation
* removed things we dont need for tests
* another file we dont need
* removed some async we dont need
* refactoring to consolidate configuration code
* removed another pointless abstraction
* #296 started writing merge code
* #296 coming up with ideas for this config merging
* #296 still hacking this idea around
* #296 will now do a crappy merge on the configuration
* #296 change so tests pass on windows
* squash SA1649 warnings (file/type name mismatch)
* squash SA1127 warnings (generic constraint on own line)
* squash SA1507 warnings (multiple blank lines)
* squash package analysis warnings re: summary text
It's not actually possible to provide a summary right now as per
https://github.com/NuGet/Home/issues/4587
* squash missing castle.core reference warning
* squash obsolete method warnings re: AddOcelotBaseUrl
* 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
