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
This repo is configured to use the pipeline controller. Second-stage tests will be triggered either automatically or after lgtm label is added, depending on the repository configuration. The pipeline controller will automatically detect which contexts are required and will utilize /test Prow commands to trigger the second stage.

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 registry-replacer, skips processing for repos listed there, updates set construction in replacement logic, propagates metadata into replacer calls, and updates tests and an autoconfigbrancher flag usage.

Changes

Cohort / File(s)	Summary
Registry replacer CLI cmd/registry-replacer/main.go	Adds ignoreRepos *flagutil.Strings to options, registers --ignore-repos flag, initializes it in gatherOptions, and passes it into replacer invocation.
Replacer implementation & logic (referenced by tests / ensureReplacement / hasReplacementFor)	Replacer signature updated to accept an ignore set; early-return (skip) when repo is in ignore-repos; ensureReplacement now constructs target sets directly with sets.New(...) (removes temporary set build).
Tests cmd/registry-replacer/main_test.go	Tests updated to include ignoreRepos field and pass it into replacer; context passed as &config.Info{Metadata: ...}; adds test case validating repo-skipping via ignore-repos; minor literal set construction tweak.
Autoconfigbrancher invocation cmd/autoconfigbrancher/main.go	Adds --ignore-repos flag usage when invoking the registry-replacer step (includes default like openshift/origin).
Module metadata go.mod	Small module file change (tidy/metadata).

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~20 minutes

✨ Finishing touches

• 📝 Generate docstrings

---

_{Comment @coderabbitai help to get the list of available commands and usage tips.}

[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-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

[Prucek]

/retest-required
/test e2e

[Prucek]

/test e2e

[Prucek]

/test e2e

[Prucek]

/unhold
/retest-required

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

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

The full list of commands accepted by this bot can be found here.

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Details

Needs approval from an approver in each of these files:

• OWNERS [Prucek,jmguzik,liangxia]

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[Prucek]

/override ci/prow/integration-optional-test

[openshift-ci]

@Prucek: Overrode contexts on behalf of Prucek: ci/prow/integration-optional-test

Details

In response to this:

/override ci/prow/integration-optional-test

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[openshift-ci]

@Prucek: The following test 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/breaking-changes	9f94f2d	link	false	/test breaking-changes

Full PR test history. Your PR dashboard.

Details

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