[OKD] Incorrect image repository in "Mirroring images for a disconnected installation" in 4.16

[pczarnik]

Which section(s) is the issue in?

• OKD 4.16 / Installing / Disconnected installation mirroring / Mirroring images for a disconnected installation
• OKD 4.16 / Installing / Deploying installer-provisioned clusters on bare metal / Setting up the environment for an OpenShift installation

What needs fixing?

1. In:

Review the OKD downloads page to determine the version of OKD that you want to install and determine the corresponding tag on the Repository Tags page.

OKD downloads page points to https://access.redhat.com/downloads/content/290/, while it should point to https://origin-release.ci.openshift.org/.
Repository Tags may be removed, because https://origin-release.ci.openshift.org/ has them listed.

2. Code snippets reference old image repository and release-name that were used before the switch from FCOS to SCOS:

• PRODUCT_REPO='openshift'
• RELEASE_NAME="okd"

These were valid for OKD based on FCOS (OKD<=4.15) which used quay.io/openshift/okd as the image repository.
However, since 4.16 FCOS is no more and OKD is based on SCOS, so quay.io/okd/scos-release is used instead.

Taking this into account, correct snippets for version 4.16 and later should look like this:

• PRODUCT_REPO='okd'
• RELEASE_NAME="scos-release"