[CALCITE-5671] Add option to disable SSL certificate validation to Elasticsearch adapter

• Type: New Feature
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 1.34.0
• Fix Version/s: 1.35.0
• Component/s: elasticsearch-adapter
• Labels: pull-request-available
• Assignee: Charles Givre
• Reporter: Charles Givre
• Created: 23/Apr/23 19:05
• Updated: 27/Jul/23 10:22
• Resolved: 28/Apr/23 03:44

Description

For many development (and sometimes production) instances of ElasticSearch, the instance is configured using a self-signed SSL certificate or otherwise cannot be validated.  

This PR adds a configuration option `disableSSLVerification` which, when set to `true`, disables SSL verification.  The default behavior is not changed.

Issue Links

• Blocked: DRILL-8385 Add support for disabling SSL certificate verification in the Elasticsearch plugin
• links to: GitHub Pull Request #3174