Upgraded to karyon 2.1.00-RC5
Merge branch '2.x' of https://github.com/Netflix/zuul into 2.x

Conflicts:
	zuul-core/build.gradle
	zuul-core/src/main/java/com/netflix/zuul/ZuulKaryonServer.java
Fixing the argument parser.
Removing additional logging per request
Merge pull request #77 from NiteshKant/2.x

Upgraded to karyon 2.1.00-RC5