Add clusterversions RBAC rule for lightspeed-stack

lightspeed-stack needs to read the cluster version (via the
config.openshift.io API) when an admin user interacts with it.
Grant list and get on clusterversions to the SAR ClusterRole.

Jira: OSPRH-29574
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: Akrog

internal/controller/lcore_reconciler.go

@@ -120,7 +120,7 @@ func reconcileSARRole(h *common_helper.Helper, ctx context.Context, instance *ap
 			{
 				APIGroups: []string{"config.openshift.io"},
 				Resources: []string{"clusterversions"},
-				Verbs:     []string{"get"},
+				Verbs:     []string{"list", "get"},
 			},
 			{
 				APIGroups:     []string{""},

test/kuttl/common/openstack-lightspeed-instance/assert-openstack-lightspeed-instance.yaml

@@ -73,6 +73,7 @@ rules:
     resources:
       - clusterversions
     verbs:
+      - list
       - get
   - apiGroups:
       - ""