fix: use fixed pod affinity label

Author: supershal

charts/cluster-api-runtime-extensions-nutanix/addons/registry/cncf-distribution/values-template.yaml

@@ -31,7 +31,7 @@ tolerations:
     effect: "NoSchedule"
 
 podLabels:
-  caren.nutanix.com/cluster-uuid: {{ .ClusterUUID }} # ensure the labels match with pod AntiAffinity.
+  cncf-distribution-registry: "true" # ensure the labels match with pod AntiAffinity.
 
 affinity:
   nodeAffinity:
@@ -46,5 +46,5 @@ affinity:
         podAffinityTerm:
           labelSelector:
             matchLabels:
-              caren.nutanix.com/cluster-uuid: {{ .ClusterUUID }}
+              cncf-distribution-registry: "true"
           topologyKey: kubernetes.io/hostname

test/e2e/registry.go

@@ -143,8 +143,8 @@ func EnsureAntiAffnityForRegistryAddon(
 	Expect(podAffinityTerm.LabelSelector).ToNot(BeNil())
 	affinityLabels := podAffinityTerm.LabelSelector.MatchLabels
 	Expect(
-		affinityLabels[v1alpha1.ClusterUUIDAnnotationKey],
-	).To(Equal(input.WorkloadCluster.Annotations[v1alpha1.ClusterUUIDAnnotationKey]))
+		affinityLabels["cncf-distribution-registry"],
+	).To(Equal("true")) // Ensure the label matches the pod AntiAffinity.
 
 	// test node affinity
 	nodeAffinity := sts.Spec.Template.Spec.Affinity.NodeAffinity