Add certificate-based e2e test

[alaye-ms]

[documentdb-triage-tool]

🤖 Auto-triaged by documentdb-triage-tool.

Applied: test, enhancement
Project fields suggested: Component test · Priority P2 · Effort M · Status In Progress
Confidence: 0.55 (llm)

Reasoning

LLM: Request to add a new certificate-based end-to-end test, which is a functional enhancement to test coverage with no body details to suggest higher urgency.

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