* es/master: (24 commits)
Add missing_bucket option in the composite agg (#29465)
Rename index_prefix to index_prefixes (#30932)
Rename methods in PersistentTasksService (#30837)
[DOCS] Fix watcher file location
Update the version checks around range bucket keys, now that the change was backported.
Use dedicated ML APIs in tests (#30941)
[DOCS] Remove reference to platinum Docker image (#30916)
Minor clean-up in InternalRange. (#30886)
stable filemode for zip distributions (#30854)
[DOCS] Adds missing TLS settings for auditing (#30822)
[test] packaging: use shell when running commands (#30852)
Fix location of AbstractHttpServerTransport (#30888)
[test] packaging test logging for suse distros
Moved keyword tokenizer to analysis-common module (#30642)
Upgrade to Lucene-7.4-snapshot-1cbadda4d3 (#30928)
Limit the scope of BouncyCastle dependency (#30358)
[DOCS] Reset edit links (#30909)
Fix IndexTemplateMetaData parsing from xContent (#30917)
Remove log traces in AzureStorageServiceImpl and fix test (#30924)
Deprecate accepting malformed requests in stored script API (#28939)
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