Examine the existing hunters in kube hunter's codebase (e.g., in the `hunters` directory) to understand the pattern for adding new security checks. Look for how other services like etcd or kube dns are detected. The issue requests detection of an open cAdvisor endpoint, typically available at `/api/v2.0/spec` on port 4194. Review the comment thread for any additional context or suggested approach. Implement a new hunter that checks for this endpoint and reports if found. Add corresponding tests and ensure the PR follows the project's contribution guidelines.
