Merge branch 'stable-2.14' into stable-2.15

* stable-2.14:
  AbstractElasticIndex: fix index name of delete request and add coverage
  Bazel: Remove unused commons-lang3
  DropWizardMetricMaker: Move sanitizeMetricName to MetricMaker base class

Change-Id: I5e03191d329c6893ba9823fd20676aeefe0fb653
tree: ec1a2e1a55456deec0902bd4802cbb9c9d66d573
  1. gerrit-acceptance-tests/
  2. gerrit-elasticsearch/
  3. gerrit-pgm/