Merge pull request #194 from tbak/2.x

2.x Interest channel upgrade
Merge pull request #195 from tbak/2.x

2.x Implement AwsDataCenterInfo provider + bootstrap resolvers.
Initial client-side interest impl
Removing need for lock in EurekaClient
Merge pull request #196 from qiangdavidliu/2.x

Initial client-side interest impl
Merge tbak/2.x with netflix/2.x

Conflicts:
	eureka-core/src/main/java/com/netflix/eureka/interests/IndexRegistry.java