This paragraph should be added to the IBGU docs:"if the seed image pull secret is present in the hub, in the same namespace as the IBGU, IBGU will add the secret to manifest list of Prep stage. The secret will be recreated in the spokes in the `openshift-lifecycle-agent` namespace."

It is not that important to be in release notes,
if it is gonna be in release notes it should be phrased as an enhancement.

    Pull secret that is specified in IBGU (spec.ibuSpec.SeedImageRef.PullSeecret) is not created on the spokes automatically.

    Always

    1. Start an upgrade using IBGU, with pull secret defined

    Pull secret is not created on spokes

     Pull secret defined in IBGU should be created on spokes (namespace: openshift-lifecycle-agent) after Prep stage is started.