* master: (185 commits)
  Implement get and containsKey in terms of the wrapped innerMap (elastic#77965)
  Adjust Lucene version and enable BWC tests (elastic#77933)
  Disable BWC to upgrade to Lucene-8.10-snapshot
  Reenable MlDistributedFailureIT
  [DOCS] Fix typo for `script.painless.regex.enabled` setting value (elastic#77853)
  Upgrade to Lucene-8.10.0-snapshot-bf2fcb53079 (elastic#77801)
  [DOCS] Fix ESS install lead-in (elastic#77887)
  Resolve thirdparty gradle plugin artifacts from mavencentral (elastic#77865)
  Reduce the number of times that `LifecycleExecutionState` is parsed when running a policy. (elastic#77863)
  Utility methods to add and remove backing indices from data streams (elastic#77778)
  Use Objects.equals() instead of == to compare strings (elastic#77840)
  [ML] prefer least allocated model when a new node is added to the cluster (elastic#77756)
  Deprecate ignore_throttled parameter (elastic#77479)
  Improve LifecycleExecutionState parsing. (elastic#77855)
  [DOCS] Removes deprecated word from HLRC title. (elastic#77851)
  Remove legacy geo code from AggregationResultUtils (elastic#77702)
  Adjust SearchableSnapshotsBlobStoreCacheIntegTests.testBlobStoreCache (elastic#77758)
  Laxify SecureSM to allow creation of the JDK's innocuous threads (elastic#77789)
  [Test] Reduce concurrency when testing creation of security index (elastic#75293)
  Refactor metric PipelineAggregation integration test (elastic#77548)
  ...

# Conflicts:
#	server/src/main/java/org/elasticsearch/cluster/metadata/DataStream.java