* stable-2.15:
Update git submodules
Reformat all Java files with google-java-format 1.6
Reformat all Java files with google-java-format 1.6
ChangeNotesTest: Have at most one call after ExpectedException#expect
FieldType: Remove unnecessary KEYWORD type
Remove unnecessary annotations from reindex test classes
AbstractReindexTests: Assert account index and group index
AbstractElasticIndex: Rename getActions to getDeleteActions
dev-bazel: Improve documentation of build caches
Hoist declaration of TestName up to GerritBaseTests
Bazel: Replace native {http,git}_archive with Skylark rules
Bazel: Bump rules_closure to 0.7.0
dev-contributing: Update link to buildifier tool
dev-contributing: Update buildifier to latest released version
Bump minimum Bazel version to 0.14.0 and activate caches
ElasticReindexIT: Add tests against Elasticsearch version 5
Elasticsearch: Add tests for queries against version 5
MatchQueryBuilder: Don't use deprecated "match" query
Elasticsearch: Add an adapter to support V5
Add Bazel version check
Change-Id: I6bbf229b76790f3fbb74a952d4330ba92e3dd449
acb1889028