Merge branch 'stable-2.14' into stable-2.15

* stable-2.14:
  AbstractQueryChangesTest: Add byMessageMixedCase test
  ElasticContainer: replace the deprecated override
  ElasticVersion: remove redundant private modifier
  ElasticIndexVersionManager: remove unneeded type
  Elasticsearch: make package-private usage explicit

Change-Id: I755cf8369136e4aac9703398cc4ddf950611a7e0

gerrit-elasticsearch/src/test/java/com/google/gerrit/elasticsearch/ElasticContainer.java

@@ -65,7 +65,7 @@ public class ElasticContainer<SELF extends ElasticContainer<SELF>> extends Gener
   }
 
   @Override
-  protected Set<Integer> getLivenessCheckPorts() {
+  public Set<Integer> getLivenessCheckPortNumbers() {
     return ImmutableSet.of(getMappedPort(ELASTICSEARCH_DEFAULT_PORT));
   }