Merge branch 'stable-2.15'

* stable-2.15:
  ElasticIndexVersionDiscovery: Convert to Java stream API
  ElasticVersionManager: Use correct configuration value for prefix
  Elasticsearch: Refactor generation of bulk requests
  Rename AbstractReindexIT to AbstractReindexTests
  ElasticReindexIT: Use @ConfigSuite.Default instead of @ConfigSuite.Config

Change-Id: Iacd3f2db3728a9c1936170b575016973bf0336d9
tree: d07235ff69e5c7a07cbdc4e354171c8bb0aba7f9
  1. java/
  2. javatests/