azurerm_kubernetes_cluster - private_cluster_public_fqdn_enabled is n…

…o longer force new (#13413)

Fix #13099, to do in place update for private_cluster_public_fqdn_enabled

internal/services/containers/kubernetes_cluster_resource.go

@@ -593,7 +593,6 @@ func resourceKubernetesCluster() *pluginsdk.Resource {
 				Type:     pluginsdk.TypeBool,
 				Optional: true,
 				Default:  false,
-				ForceNew: true,
 			},
 
 			"private_dns_zone_id": {
@@ -1225,6 +1224,11 @@ func resourceKubernetesClusterUpdate(d *pluginsdk.ResourceData, meta interface{}
 		}
 	}
 
+	if d.HasChange("private_cluster_public_fqdn_enabled") {
+		updateCluster = true
+		existing.ManagedClusterProperties.APIServerAccessProfile.EnablePrivateClusterPublicFQDN = utils.Bool(d.Get("private_cluster_public_fqdn_enabled").(bool))
+	}
+
 	if d.HasChange("auto_scaler_profile") {
 		updateCluster = true
 		autoScalerProfileRaw := d.Get("auto_scaler_profile").([]interface{})