Eureka changes for single nodes rabbit changes

We're changing rabbit to not be a cluster and just using single nodes because of the recent issues we've had with rabbit.  Because of this eureka needs some changes.  This update adds an update timer, along with lookup strategies for zone preference and a special lookup for an A to E zone preference.

The majority of the eureka translation code has also been removed since it wasn't in a working state, which allowed the removal of the C5 library.