Merge branch 'stable-2.14' into stable-2.15

* stable-2.14:
  Extract duplicated code in servlets to abstract class
  Rename DispatchEvent to ForwardedEventHandler
  Rename EvictCache to ForwardedCacheEvictionHandler
  Refactor EvictCache.evict method to accept only one argument
  Inline private method in EvictCache
  Add mock suffix in Index*RestApiServletTest

Change-Id: I847bbf2ab134272b5e961da3c73e8243fd2fe902