Allow SimpleLookupService.GetLookupService().GetApplication(string) to be called even when Eureka is not being used (ie: there are no known eureka servers).
Merge branch 'Ops_RabbitRejigger' of https://github.com/hudl/eureka-contrib into Ops_RabbitRejigger

Conflicts:
	Eureka.NET/Hudl.Eureka/SimpleLookupService.cs
Merge branch 'Ops_RabbitRejigger' of https://github.com/hudl/eureka-contrib into Ops_RabbitRejigger
Tweaked the SimpleLookupService.cs to be tolerant of eureka comm failures. An error is logged and an empty Application is returned.
Merge branch 'Ops_RabbitRejigger' of https://github.com/hudl/eureka-contrib into Ops_RabbitRejigger

Conflicts:
	Eureka.NET/Hudl.Eureka/SimpleLookupService.cs