Merge branch 'stable-2.15' into stable-2.16

* stable-2.15:
  Fix invalid json example in POST access endpoint (remove array)
  ElasticV7QueryChangesTest: Close indices after test
  Upgrade Testcontainers to 1.10.2 and use ElasticsearchContainer

Adapt ElasticV{5,6,7}QueryProjectsTest accordingly, as these are only
implemented starting with stable-2.16.

Change-Id: I0666decbeda54cae6e59f7bba0caaaf5550f4318
tree: 7d15c1617dd15e2ab63644c98a096d3eebcb5358
  1. java/
  2. javatests/