Modify RHEL 8.3 and 8.4 KVM guest images definition to produce osbuild
manifest with `org.osbuild.rhsm` stage to disable both RHSM DNF plugins
(`product-id` and `subscription-manager`).
Update `/docs/news/unreleased/osbuild-rhsm-stage.md` to note that RHEL
8.3 and 8.4 qcow2 image definitions are updated to disable RHSM DNF
plugins by default.
Enhance `tools/image-info` tool to add RHSM-specific section to its
output in case RHSM DNF plugins configurations exist in the tree.
Regenerate all RHEL image test cases affected by the patch set.
Signed-off-by: Tomas Hozza <thozza@redhat.com>
af3c572f9a