registry-replacer: add ignore-repos option

[Prucek]

Add --ignore-repos flag to registry-replacer

Changes:

• Add --ignore-repos flag that accepts org/repo notation (can be passed multiple times)
• Skip processing for repos in the ignore list
• Add openshift/origin into the ignore list

The dockerfile-inputs feature will handle base image detection at build time,
while registry-replacer will skip these repos in its periodic runs.

Related: Phase 2 of dockerfile-inputs rollout (registry-replacer deprecation)
Needs: #4851

[openshift-ci-robot]

Pipeline controller notification
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For optional jobs, comment /test ? to see a list of all defined jobs. To trigger manually all jobs from second stage use /pipeline required command.

This repository is configured in: automatic mode

[coderabbitai]

Walkthrough

Adds a new --ignore-repos flag, threads an ignoreRepos set into the registry-replacer invocation, implements early skipping of listed repos in the replacer, refactors some set construction, and updates tests and an autoconfigbrancher flag usage to cover the new behavior and metadata propagation.

Changes

Cohort / File(s)	Summary
Registry replacer CLI cmd/registry-replacer/main.go	Adds an ignoreRepos option from a new --ignore-repos flag and passes it into the replacer call.
Replacer implementation (implementation referenced by tests)	Replacer now accepts an ignore set and returns early (skips) when a repo is in ignore-repos. Refactors ensureReplacement to construct target sets with sets.New(...); hasReplacementFor behavior preserved.
Tests cmd/registry-replacer/main_test.go	Adds ignoreRepos to test cases and replacer invocation, updates context to pass config.Info{Metadata: ...}, and adds a test verifying a repo listed in ignore-repos is skipped. Minor literal set construction change in a test.
Autoconfigbrancher step cmd/autoconfigbrancher/main.go	Adds the --ignore-repos flag usage to pass a default ignored repo (e.g., openshift/origin) into the registry-replacer step.
Module metadata go.mod	Small module file update (metadata/tidy change).

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~20 minutes

✨ Finishing touches

• 📝 Generate docstrings

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📥 Commits

Reviewing files that changed from the base of the PR and between 635aabc and 3f21d79.

📒 Files selected for processing (1)

• cmd/autoconfigbrancher/main.go

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⚙️ CodeRabbit configuration file

-Focus on major issues impacting performance, readability, maintainability and security. Avoid nitpicks and avoid verbosity.

Files:

• cmd/autoconfigbrancher/main.go

🔇 Additional comments (1)

cmd/autoconfigbrancher/main.go (1)

172-172: Flag implementation verified and distinction is clear.

The --ignore-repos flag is properly implemented in registry-replacer (cmd/registry-replacer/main.go line 70) and serves a distinct purpose from --ensure-correct-promotion-dockerfile-ignored-repos:

• --ignore-repos: completely skips repos from all registry-replacer processing (useful for repos using dockerfile-inputs feature)
• --ensure-correct-promotion-dockerfile-ignored-repos: only skips the promotion dockerfile verification step for specified repos

The addition of openshift/origin to the ignore list on line 172 is correct for the dockerfile-inputs rollout.

---

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[coderabbitai]

Actionable comments posted: 1

🤖 Fix all issues with AI agents

In @cmd/autoconfigbrancher/main.go:
- Line 172: The command invocation currently uses the incorrect flag string
"--ignore-repo" which is unrecognized; change that literal to the expected
"--ignore-repos" (plural) wherever it appears in the command construction (the
argument list containing "--ignore-repo", "openshift/origin") so the
registry-replacer flag is recognized.

📜 Review details

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Cache: Disabled due to data retention organization setting

Knowledge base: Disabled due to Reviews -> Disable Knowledge Base setting

📥 Commits

Reviewing files that changed from the base of the PR and between b2d2d1a and 635aabc.

📒 Files selected for processing (1)

• cmd/autoconfigbrancher/main.go

🧰 Additional context used

📓 Path-based instructions (1)

**

⚙️ CodeRabbit configuration file

-Focus on major issues impacting performance, readability, maintainability and security. Avoid nitpicks and avoid verbosity.

Files:

• cmd/autoconfigbrancher/main.go

[Prucek]

/retest-required

[jmguzik]

AI's obvious comments ;)

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: jmguzik, Prucek

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[openshift-ci-robot]

Scheduling required tests:
/test e2e

Scheduling tests matching the pipeline_run_if_changed or not excluded by pipeline_skip_if_only_changed parameters:
/test integration-optional-test

[Prucek]

/hold

[openshift-ci]

New changes are detected. LGTM label has been removed.

[Prucek]

/retest-required
/test e2e

[openshift-ci]

@Prucek: The following tests failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
ci/prow/e2e	3f21d79	link	true	/test e2e
ci/prow/breaking-changes	3f21d79	link	false	/test breaking-changes

Full PR test history. Your PR dashboard.

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