This commit removes the hardcoded list of unconfigured ciphers in the
SslIntegrationTests. This list may include ciphers that are not
supported on certain JVMs. This list is replaced with code that
dynamically computes the set of ciphers that are not configured for
use by default.

* origin/master: (39 commits)
  Docs: fix changelog merge
  Fix line length violation in cache tests
  Add stricter geohash parsing (elastic#30376)
  Add failing test for core cache deadlock
  [DOCS] convert forcemerge snippet
  Update forcemerge.asciidoc (elastic#30113)
  Added zentity to the list of API extension plugins (elastic#29143)
  Fix the search request default operation behavior doc (elastic#29302) (elastic#29405)
  Watcher: Mark watcher as started only after loading watches (elastic#30403)
  Pass the task to broadcast actions (elastic#29672)
  Disable REST default settings testing until elastic#29229 is back-ported
  Correct wording in log message (elastic#30336)
  Do not fail snapshot when deleting a missing snapshotted file (elastic#30332)
  AwaitsFix testCreateShrinkIndexToN
  DOCS: Correct mapping tags in put-template api
  DOCS: Fix broken link in the put index template api
  Add put index template api to high level rest client (elastic#30400)
  Relax testAckedIndexing to allow document updating
  [Docs] Add snippets for POS stop tags default value
  Move respect accept header on no handler to 6.3.1
  ...