Implement AwsDataCenterInfo provider.
Implement bootstrap resolvers.
EurekaServerResolver still neds to be done + some extensions to StaticServerResolver are required.
Disable failing test that depends on DNS access.
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