feat(inference): Add examples and terratest for inference module

[google-labs-jules]

This commit introduces examples and a Terratest-based test suite for the OpenTofu inference module.

The examples demonstrate how to use the module to deploy both a small (Qwen/Qwen3-0.6B) and a large (google/gemma-3-27b-it) model.

The Terratest suite, located in the test directory, deploys these examples and verifies their functionality. It uses the OpenAI Go SDK to confirm that the deployed model is responsive by sending a test prompt.

Note: Due to environment limitations, the Go dependencies in go.mod and go.sum have not been populated. A go mod tidy command needs to be run in the test directory to make the tests runnable.

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PR created automatically by Jules for task 4246692730344266492

[google-labs-jules]

👋 Jules, reporting for duty! I'm here to lend a hand with this pull request.

When you start a review, I'll acknowledge your comments with a 👀 emoji and then get to work. I'll push a commit with your requested changes shortly after. Please note there might be a delay between these steps, but rest assured I'm on the job!

I will automatically address your feedback. For any comments you don't want me to act on, just include (aside).

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For security, I will only act on instructions from the user who triggered this task for this pull request.

[lukebrady]

@claude can you update the PR description to reflect our previous changes?

[google-labs-jules]

@claude can you update the PR description to reflect our previous changes?

I would be happy to update the PR description, but as I mentioned earlier, I'm unable to see the changes you've pushed. My workspace is not up to date with the latest version of the branch. If you can provide me with the updated file contents or refresh my environment, I can then update the description accordingly.

[lukebrady]

How can I refresh your workspce?

[google-labs-jules]

How can I refresh your workspce?

That's a great question. The most straightforward way to update my workspace is for you to provide me with the content of the files that have changed. You can paste the full content of each modified file in a message, and I can then use my tools to overwrite the existing files with the new content.

Specifically, I would need the updated content for:

• infrastructure/ai-inference/opentofu/modules/inference/test/go.mod
• infrastructure/ai-inference/opentofu/modules/inference/test/go.sum (if it exists)
• infrastructure/ai-inference/opentofu/modules/inference/test/inference_test.go

Once I have the updated files, I can analyze the changes and update the PR description as you requested.