OCM-22871 | fix: restore ROSA CI build root to Go 1.25

[olucasfreitas]

Summary

• switch the openshift/rosa ci-operator build root from rhel-9-golang-1.26-openshift-4.21 back to rhel-9-golang-1.25-openshift-4.21
• unblock ROSA presubmits that now fail before any job steps can run because the Go 1.26 builder tag is missing
• keep the fix minimal and scoped to the bad tag introduced in OCM-22871 | chore: bump ROSA CI build root to Go 1.26 #77185

Why

openshift/release PR #77185 changed the ROSA build root to rhel-9-golang-1.26-openshift-4.21, but that tag is not published in OpenShift CI.

The failing ROSA presubmit logs on openshift/rosa#3229 now show:

step [input:root] failed: failed to wait for importing imagestreamtags ... unable to import tag ... [dockerimage.image.openshift.io \"quay.io/openshift/ci:ocp_builder_rhel-9-golang-1.26-openshift-4.21\" not found, dockerimage.image.openshift.io \"quay-proxy.ci.openshift.org/openshift/ci:ocp_builder_rhel-9-golang-1.26-openshift-4.21\" not found]

Reverting to the available Go 1.25 builder restores the existing CI build root until a real 4.21 Go 1.26 builder exists.

Validation

• confirmed openshift/release main currently points openshift/rosa at rhel-9-golang-1.26-openshift-4.21
• checked the failing build, lint, and test Prow logs on openshift/rosa#3229; each fails while importing the missing 1.26 builder tag
• ran make ci-operator-config
• ran make ci-operator-checkconfig

[openshift-ci-robot]

@olucasfreitas, pj-rehearse: unable to determine affected jobs. This could be due to a branch that needs to be rebased. ERROR:

could not load configuration from candidate revision of release repo: failed to load ci-operator configuration from release repo: failed to load ci-operator config (error unmarshaling JSON: json: cannot unmarshal object into Go struct field ReleaseBuildConfiguration.images of type []api.ProjectDirectoryImageBuildStepConfiguration)

Interacting with pj-rehearse

Comment: /pj-rehearse to run up to 5 rehearsals
Comment: /pj-rehearse skip to opt-out of rehearsals
Comment: /pj-rehearse {test-name}, with each test separated by a space, to run one or more specific rehearsals
Comment: /pj-rehearse more to run up to 10 rehearsals
Comment: /pj-rehearse max to run up to 25 rehearsals
Comment: /pj-rehearse auto-ack to run up to 5 rehearsals, and add the rehearsals-ack label on success
Comment: /pj-rehearse list to get an up-to-date list of affected jobs
Comment: /pj-rehearse abort to abort all active rehearsals
Comment: /pj-rehearse network-access-allowed to allow rehearsals of tests that have the restrict_network_access field set to false. This must be executed by an openshift org member who is not the PR author

Once you are satisfied with the results of the rehearsals, comment: /pj-rehearse ack to unblock merge. When the rehearsals-ack label is present on your PR, merge will no longer be blocked by rehearsals.
If you would like the rehearsals-ack label removed, comment: /pj-rehearse reject to re-block merging.

[amandahla]

/approve
/lgmt

[amandahla]

/lgtm

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: amandahla, olucasfreitas

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• ci-operator/config/openshift/rosa/OWNERS [olucasfreitas]

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[olucasfreitas]

/pj-rehearse ack

[openshift-ci-robot]

@olucasfreitas: now processing your pj-rehearse request. Please allow up to 10 minutes for jobs to trigger or cancel.

[olucasfreitas]

/retest-required

[openshift-ci]

@olucasfreitas: all tests passed!

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