This commit removes xpack from being a meta-plugin-as-a-module.
It also fixes a couple tests which were missing task dependencies, which
failed once the gradle execution order changed.

* es/master: (74 commits)
  Preserve REST client auth despite 401 response (#30558)
  [test] packaging: add windows boxes (#30402)
  Make xpack modules instead of a meta plugin (#30589)
  Mute ShrinkIndexIT
  [ML] DeleteExpiredDataAction should use client with origin (#30646)
  Reindex: Fixed typo in assertion failure message (#30619)
  [DOCS] Fixes list of unconverted snippets in build.gradle
  [DOCS] Reorganizes RBAC documentation
  SQL: Remove dependency for server's version from JDBC driver (#30631)
  Test: increase search logging for LicensingTests
  Adjust serialization version in IndicesOptions
  [TEST] Fix compilation
  Remove version argument in RangeFieldType (#30411)
  Remove unused DirectoryUtils class. (#30582)
  Mitigate date histogram slowdowns with non-fixed timezones. (#30534)
  Add a MovingFunction pipeline aggregation, deprecate MovingAvg agg (#29594)
  Removes AwaitsFix on IndicesOptionsTests
  Template upgrades should happen in a system context (#30621)
  Fix bug in BucketMetrics path traversal (#30632)
  Fixes IndiceOptionsTests to serialise correctly (#30644)
  ...

* es/6.x: (44 commits)
  SQL: Remove dependency for server's version from JDBC driver (#30631)
  Make xpack modules instead of a meta plugin (#30589)
  Security: Remove SecurityLifecycleService (#30526)
  Build: Add task interdependencies for ssl configuration (#30633)
  Mute ShrinkIndexIT
  [ML] DeleteExpiredDataAction should use client with origin (#30646)
  Reindex: Fixed typo in assertion failure message (#30619)
  [DOCS] Fixes list of unconverted snippets in build.gradle
  Use readFully() to read bytes from CipherInputStream (#30640)
  Add Create Repository High Level REST API (#30501)
  [DOCS] Reorganizes RBAC documentation
  Test: increase search logging for LicensingTests
  Delay _uid field data deprecation warning (#30651)
  Deprecate Empty Templates (#30194)
  Remove unused DirectoryUtils class. (#30582)
  Mitigate date histogram slowdowns with non-fixed timezones. (#30534)
  [TEST] Remove AwaitsFix in IndicesOptionsTests#testSerialization
  S3 repo plugin populates SettingsFilter (#30652)
  Rest High Level client: Add List Tasks (#29546)
  Fixes IndiceOptionsTests to serialise correctly (#30644)
  ...

* es/ccr: (75 commits)
  Preserve REST client auth despite 401 response (elastic#30558)
  [test] packaging: add windows boxes (elastic#30402)
  Make xpack modules instead of a meta plugin (elastic#30589)
  Mute ShrinkIndexIT
  [ML] DeleteExpiredDataAction should use client with origin (elastic#30646)
  Reindex: Fixed typo in assertion failure message (elastic#30619)
  [DOCS] Fixes list of unconverted snippets in build.gradle
  [DOCS] Reorganizes RBAC documentation
  SQL: Remove dependency for server's version from JDBC driver (elastic#30631)
  Test: increase search logging for LicensingTests
  Adjust serialization version in IndicesOptions
  [TEST] Fix compilation
  Remove version argument in RangeFieldType (elastic#30411)
  Remove unused DirectoryUtils class. (elastic#30582)
  Mitigate date histogram slowdowns with non-fixed timezones. (elastic#30534)
  Add a MovingFunction pipeline aggregation, deprecate MovingAvg agg (elastic#29594)
  Removes AwaitsFix on IndicesOptionsTests
  Template upgrades should happen in a system context (elastic#30621)
  Fix bug in BucketMetrics path traversal (elastic#30632)
  Fixes IndiceOptionsTests to serialise correctly (elastic#30644)
  ...

…ngs-to-true

* elastic/master: (25 commits)
  [DOCS] Replace X-Pack terms with attributes
  [ML] Clean left behind model state docs (elastic#30659)
  Correct typos
  filters agg docs duplicated 'bucket' word removal (elastic#30677)
  top_hits doc example description update (elastic#30676)
  [Docs] Replace InetSocketTransportAddress with TransportAdress (elastic#30673)
  [TEST] Account for increase in ML C++ memory usage (elastic#30675)
  User proper write-once semantics for GCS repository (elastic#30438)
  Remove bogus file accidentally added
  Add detailed assert message to IndexAuditUpgradeIT (elastic#30669)
  Adjust fast forward for token expiration test  (elastic#30668)
  Improve explanation in rescore (elastic#30629)
  Deprecate `nGram` and `edgeNGram` names for ngram filters (elastic#30209)
  Watcher: Fix watch history template for dynamic slack attachments (elastic#30172)
  Fix _cluster/state to always return cluster_uuid (elastic#30656)
  [Tests] Add debug information to CorruptedFileIT
  Preserve REST client auth despite 401 response (elastic#30558)
  [test] packaging: add windows boxes (elastic#30402)
  Make xpack modules instead of a meta plugin (elastic#30589)
  Mute ShrinkIndexIT
  ...

This commit removes xpack from being a meta-plugin-as-a-module.
It also fixes a couple tests which were missing task dependencies, which
failed once the gradle execution order changed.