Remove cert-manager copybara config post-upstream

[ddelnano]

Summary: Remove cert-manager copybara config post-upstream

These changes were upstreamed in pixie-io#2391 and pixie-io#2392

Relevant Issues: N/A

Type of change: /kind cleanup

Test Plan: Checked git diff between upstream and k8ss repo

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: ASSERTIVE

Plan: Pro Plus

Run ID: d6f29bcb-3da5-44de-a74b-9c22ec2b7ada

📥 Commits

Reviewing files that changed from the base of the PR and between 5a07264 and 54caad1.

📒 Files selected for processing (1)

• tools/private/copybara/copy.bara.sky

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📝 Walkthrough

Walkthrough

The Copybara configuration narrows Kubernetes ignore rules to k8s/vizier/BUILD.bazel and removes exclusions for scripts/create_cloud_secrets.sh and src/utils/shared/certs/**.

Changes

Copybara filter updates

Layer / File(s)	Summary
Narrow synchronization exclusions tools/private/copybara/copy.bara.sky	The ignored_dirs configuration replaces the broad k8s/** rule with k8s/vizier/BUILD.bazel and removes exclusions for the secrets script and shared certificates subtree.

Estimated code review effort: 1 (Trivial) | ~3 minutes

Possibly related PRs

• k8sstormcenter/pixie#75: Updates the same Copybara ignore configuration with narrower Kubernetes-specific exclusions.

Suggested reviewers: entlein

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title matches the cleanup theme and Copybara config change, though it is broader than the exact diff.
Description check	✅ Passed	The description matches the Copybara cleanup and upstreaming context, so it is clearly related to the changes.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches 💡 1

⚔️ Resolve merge conflicts 💡

• Resolve merge conflict in branch ddelnano/remove-cert-manager-copybara

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch ddelnano/remove-cert-manager-copybara

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