Interests infra (WIP)
Merge branch '2.x' of https://github.com/Netflix/eureka into 2.x

Conflicts:
	eureka-core/src/main/java/com/netflix/eureka/registry/Interest.java
Update for the interests changes
Interests infra (WIP)
Interests infra (WIP)
Merge pull request #160 from NiteshKant/2.x

Initial attempt to interests implementation