* es/master: (53 commits)
  Bump compat version for local depdendent test to 6.2.0
  Pass `java.locale.providers=COMPAT` to Java 9 onwards (#28080)
  Allow shrinking of indices from a previous major (#28076)
  Remove deprecated exceptions (#28059)
  Add Writeable.Reader support to TransportResponseHandler (#28010)
  Plugins: Add plugin extension capabilities (#27881)
  Fix cluster.routing.allocation.enable and cluster.routing.rebalance.enable casing (#28037)
  [Test] Fix scores for dcg in RankEvalRequestIT and RankEvalYamlIT
  [Docs] Add note on limitation for significant_text with nested objects (#28052)
  Enable convert processor to support Long and Double. (#27957)
  Enable Wildfly tests on JDK 9 and JDK 10
  [Test] Fix allowed delta for calculated scores in DiscountedCumulativeGainTests
  [Test] Mute DiscountedCumulativeGainTests on ARM
  Only bind loopback addresses when binding to local
  Fix assertion in Wildfly build
  Fix typo in comment in Wildfly build
  Use ephemeral ports in Wildfly tests
  Update fuzzy-query.asciidoc (#28032)
  Just another elasticsearch library (#27996)
  Disable nio test transport (#28028)
  ...

* master:
  Set the elasticsearch-nio codebase for tests (#28067)
  Bump compat version for local depdendent test to 6.2.0
  Pass `java.locale.providers=COMPAT` to Java 9 onwards (#28080)
  Allow shrinking of indices from a previous major (#28076)
  Remove deprecated exceptions (#28059)
  Add Writeable.Reader support to TransportResponseHandler (#28010)
  Plugins: Add plugin extension capabilities (#27881)

* master: (25 commits)
  Remove Gradle cheatsheet
  Fix reproduction info to point to Gradle wrapper
  Update platforms tests to use Gradle wrapper
  Update testing docs to reflect Gradle wrapper
  Painless: Modify Loader to Load Classes Directly from Definition (elastic#28088)
  Update contributing docs to use the Gradle wrapper
  Create nio-transport plugin for NioTransport (elastic#27949)
  test: replaced try-catch statements with expectThrows(...)
  Add getWarmer and getTranslog method to NodeIndicesStats (elastic#28092)
  fix doc mistake
  Added ASN support for Ingest GeoIP plugin.
  Fix global aggregation that requires breadth first and scores (elastic#27942)
  Introduce Gradle wrapper
  Ignore GIT_COMMIT when calculating commit hash
  Re-enable bwc tests after elastic#27881 was backported
  Set the elasticsearch-nio codebase for tests (elastic#28067)
  Bump compat version for local depdendent test to 6.2.0
  Pass `java.locale.providers=COMPAT` to Java 9 onwards (elastic#28080)
  Allow shrinking of indices from a previous major (elastic#28076)
  Remove deprecated exceptions (elastic#28059)
  ...