#31821 introduced an unreleased bug where NOOP updates were incorrectly mutating the bulk
shard request, inserting null item to be replicated, which would result in NullPointerExceptions when
serializing the request to be shipped to the replicas.

Closes #32808

…e-types

* elastic/master: (199 commits)
  Watcher: Remove unused hipchat render method (elastic#32211)
  Watcher: Remove extraneous auth classes (elastic#32300)
  Watcher: migrate PagerDuty v1 events API to v2 API (elastic#32285)
  [TEST] Select free port for Minio (elastic#32837)
  MINOR: Remove `IndexTemplateFilter` (elastic#32841)
  Core: Add java time version of rounding classes (elastic#32641)
  Aggregations/HL Rest client fix: missing scores (elastic#32774)
  HLRC: Add Delete License API (elastic#32586)
  INGEST: Create Index Before Pipeline Execute (elastic#32786)
  Fix NOOP bulk updates (elastic#32819)
  Remove client connections from TcpTransport (elastic#31886)
  Increase logging testRetentionPolicyChangeDuringRecovery
  AwaitsFix case-functions.sql-spec
  Mute security-cli tests in FIPS JVM (elastic#32812)
  SCRIPTING: Support BucketAggScript return null (elastic#32811)
  Unmute WildFly tests in FIPS JVM (elastic#32814)
  [TEST] Force a stop to save rollup state before continuing (elastic#32787)
  [test] disable packaging tests for suse boxes
  Mute IndicesRequestIT#testBulk
  [ML][DOCS] Refer to rules feature as custom rules (elastic#32785)
  ...

…listeners

* elastic/master:
  Watcher: Remove unused hipchat render method (elastic#32211)
  Watcher: Remove extraneous auth classes (elastic#32300)
  Watcher: migrate PagerDuty v1 events API to v2 API (elastic#32285)
  [TEST] Select free port for Minio (elastic#32837)
  MINOR: Remove `IndexTemplateFilter` (elastic#32841)
  Core: Add java time version of rounding classes (elastic#32641)
  Aggregations/HL Rest client fix: missing scores (elastic#32774)
  HLRC: Add Delete License API (elastic#32586)
  INGEST: Create Index Before Pipeline Execute (elastic#32786)
  Fix NOOP bulk updates (elastic#32819)
  Remove client connections from TcpTransport (elastic#31886)
  Increase logging testRetentionPolicyChangeDuringRecovery
  AwaitsFix case-functions.sql-spec
  Mute security-cli tests in FIPS JVM (elastic#32812)
  SCRIPTING: Support BucketAggScript return null (elastic#32811)
  Unmute WildFly tests in FIPS JVM (elastic#32814)
  [TEST] Force a stop to save rollup state before continuing (elastic#32787)
  [test] disable packaging tests for suse boxes
  Mute IndicesRequestIT#testBulk
  [ML][DOCS] Refer to rules feature as custom rules (elastic#32785)

* 6.x: (96 commits)
  Introduce global checkpoint listeners (#32696)
  Use JDK 10 for 6.4 BWC builds (#32866)
  Remove unused imports - follow up to removal of test in issue 32855
  Removed flaky test. Looks like randomisation makes these assertions unreliable. This test is superfluous - it was added to address #32770 but it later turned out there was an existing test that just required a fix to provide the missing test coverage.
  [test] mute IndexShardTests.testDocStats
  Test: Fix forbidden uses in test framework (#32824)
  Security: remove password hash bootstrap check (#32440)
  Move validation to server for put user requests (#32471)
  [ML] Add high level REST client docs for ML put job endpoint (#32843)
  Painless: Change fqn_only to no_import (#32817)
  [test] mute testSearchWithSignificantTermsAgg
  Backport: CompletableContext class to avoid throwable (#32829)
  [TEST] Select free port for Minio (#32837)
  SCRIPTING: Support BucketAggScript return null (#32811) (#32833)
  HLRC: Add Delete License API (#32586)
  Aggregations/HL Rest client fix: missing scores (#32774)
  HLRC: migration get assistance API (#32744)
  Fix NOOP bulk updates (#32819)
  Increase logging testRetentionPolicyChangeDuringRecovery
  AwaitsFix case-functions.sql-spec
  ...