Config enhancements for CDH and SRS + doc

What's Changed

• US-522126 Adding OAUTH_PUBLIC_KEY_URL in deployment parameters by @chandra-kalavakuri in #529
• ISSUE-538 Ability to set the HTTP thread pool size by @lukaszkarnasiewicz in #539
• BUG-779278 - Open-source K8s information on github by @kingakowalska1 in #512
• ISSUE-541: Ability to configure the circuit breaker's starting mode by @lukaszkarnasiewicz in #542

New Contributors

• @lukaszkarnasiewicz made their first contribution in #539

Full Changelog: 2.9.0...v2.10.0