Validate self-managed PKI end to end

[nv-lacm]

Description

Validate the complete self-managed PKI workflow in a local test environment.

Definition of Done

• The stack renders with cert-manager and OpenBao authentication configured.
• The control-plane attachment and compute-plane registration establish transport trust.
• An LLM workload connects over certificate-validated reverse QUIC.
• Missing or incorrect trust material fails closed.
• Validation results are recorded.