Containerized Kerberos and SSH Testing

This feature thread tracks the evolution of building secure testing environments for distributed systems, specifically focusing on containerized setups for authentication protocols like Kerberos and SSH. It covers the configuration of KDC servers, SSH servers, and clients within containers to enable passwordless authentication and facilitate the testing of connectors and applications that rely on these security mechanisms. The goal is to provide a reproducible and efficient way to validate security features in local development and CI/CD pipelines.