release-2.6.17

New features / enhancements:

• Search CDEs by values in the value set: support [pv] search prefix (#1124)
• Implement consistent relevance ranking
• Disable Cypher logging to avoid Redis out-of-memory issues
• Load value sets ontology when running index regeneration task

Version upgrades:

• Upgrade log4j from 2.16.0 to 2.17.1