CI: Allow ops files for BRATS dns

[selzoc]

This will allow the bosh-dns pipeline to pass in some jammy-specific overrides (most of BRATs is hardcoded for noble).

[coderabbitai]

Caution

Review failed

The pull request is closed.

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: ASSERTIVE

Plan: Pro

Run ID: 9a9eaef1-caba-4b28-896e-a8dc60170e63

📥 Commits

Reviewing files that changed from the base of the PR and between 5afc2fd and 963545a.

📒 Files selected for processing (1)

• ci/shared/brats/test-acceptance.sh

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Walkthrough

This PR adds conditional DNS manifest modification to the BRATs acceptance test script. When the BRATS_DNS_MANIFEST_OPS_FILES environment variable is set, the script now uses bosh int to apply provided ops files to a template DNS manifest, generates a modified manifest in a temporary location, and copies the result back to the test manifest path. If the environment variable is not set, no DNS manifest modification occurs. The rest of the test flow remains unchanged.

Suggested reviewers

• mkocher

✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch enable-brats-dns-ops-files

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