📝 Description

Add Iguazio V4 authentication support for API Gateway by introducing a new NuclioAuthInfo class that handles bearer token authentication.

🛠️ Changes Made

• Added new mlrun/auth/nuclio.py module with NuclioAuthInfo class supporting:
  • Bearer token authentication for Iguazio V4 mode
  • Basic auth and session-based auth for non-V4 modes
  • from_auth_info(), from_request_headers(), and from_envvar() factory methods
• Removed deprecated to_nuclio_auth_info() method and helper classes from mlrun/common/schemas/auth.py
• Updated API Gateway, Nuclio function deployments, and server-side clients to use the new NuclioAuthInfo class
• Added @min_nuclio_versions("1.15.10") requirement for with_iguazio_auth() method

✅ Checklist

• I updated the documentation (if applicable)
• I have tested the changes in this PR
• I confirmed whether my changes are covered by system tests
  • If yes, I ran all relevant system tests and ensured they passed before submitting this PR
  • I updated existing system tests and/or added new ones if needed to cover my changes
• If I introduced a deprecation:
  • I followed the Deprecation Guidelines
  • I updated the relevant Jira ticket for documentation

🧪 Testing

• Tests over igz3 for regression ✔️
• Tests over igz4 for progression ✔️

🔗 References

• Ticket link: https://iguazio.atlassian.net/browse/ML-11562
• Design docs links:
• External links:

🚨 Breaking Changes?

• Yes (explain below)
• No

🔍️ Additional Notes

Refactors Nuclio authentication to properly support Iguazio V4's bearer token-based authentication while maintaining backward compatibility with V3 session-based auth.