[4finance/micro-infra-spring#79] Extra methods to allow full introspection of service registry contents (all services and all instances)
ServiceResolver heavily refactored to be type-safe: ServiceAlias and ServicePath, URI
[4finance/micro-infra-spring#79] Renaming fetchCollaboratorsNames() -> fetchMyDependencies(), fetchAllServices() -> fetchAllDependencies()
Merge pull request #31 from 4finance/issues/micro-infra-spring/79

[4finance/micro-infra-spring#79] Support complete service registry introspection