databases/elasticsearch: Update to 6.2.2.

== 6.2.2 Release Notes

=== Enhancements

Recovery::
- Synced-flush should not seal index of out of sync replicas

=== Bug fixes

Core::
- Handle throws on tasks submitted to thread pools
- Fix size blocking queue to not lie about its weight

Ingest::
- Guard accessDeclaredMembers for Tika on JDK 10
- Fix for bug that prevents pipelines to load that use stored scripts
  after a restart

Java High Level REST Client::
- Fix parsing of script fields
- Move to POST when calling API to retrieve which support request body

Packaging::
- Fix using relative custom config path
- Disable console logging in the Windows service

Percolator::
- Do not take duplicate query extractions into account for
  minimum_should_match attribute

Recovery::
- Fsync directory after cleanup

== 6.2.1 Release Notes

=== Bug fixes

Plugin Lang Painless::
- Painless: Fix For Loop NullPointerException

Plugins::
- Fix the ability to remove old plugin

(fhajny)