put right numer into the latch
[Test] Speedup UpdateTests#testConcurrentUpdateWithRetryOnConflict
Undo my last changes to work around the fact that @Before annotations are run for each test.
Move most aggregations tests to ElasticsearchSharedIntegrationTest.
Fix test failure.
Ensure reproducibility for ElasticsearchSharedIntegrationTest
Moved BackgroundIndexer to a top level class. Moved waitNumDocs to ElasticsearchIntegrationTestBase.

Update RelocationTests to use the above and unified testPrimaryRelocationWhileIndexing & testReplicaRelocationWhileIndexingRandom into a single randomized test.
Added allocation trace logging for o.e.s.aggregations.bucket package
Added ClusterStateStatus