Only register floatingIP for external loadbalancer service

If the user has provided the floating-ip options, then it's safe
to assume they want (only) the floating-ip to be the ingress IP;
if they have not provided floating-ip options, then the LB IP is
the only relevant value.
Fix kubernetes#52566

pkg/cloudprovider/providers/openstack/openstack_loadbalancer.go

@@ -869,10 +869,6 @@ func (lbaas *LbaasV2) EnsureLoadBalancer(clusterName string, apiService *v1.Serv
 		glog.V(2).Infof("Deleted obsolete listener: %s", listener.ID)
 	}
 
-	status := &v1.LoadBalancerStatus{}
-
-	status.Ingress = []v1.LoadBalancerIngress{{IP: loadbalancer.VipAddress}}
-
 	portID := loadbalancer.VipPortID
 	floatIP, err := getFloatingIPByPortID(lbaas.network, portID)
 	if err != nil && err != ErrNotFound {
@@ -895,8 +891,13 @@ func (lbaas *LbaasV2) EnsureLoadBalancer(clusterName string, apiService *v1.Serv
 			return nil, fmt.Errorf("Error creating LB floatingip %+v: %v", floatIPOpts, err)
 		}
 	}
+
+	status := &v1.LoadBalancerStatus{}
+
 	if floatIP != nil {
-		status.Ingress = append(status.Ingress, v1.LoadBalancerIngress{IP: floatIP.FloatingIP})
+		status.Ingress = []v1.LoadBalancerIngress{{IP: floatIP.FloatingIP}}
+	} else {
+		status.Ingress = []v1.LoadBalancerIngress{{IP: loadbalancer.VipAddress}}
 	}
 
 	if lbaas.opts.ManageSecurityGroups {
@@ -1453,9 +1454,6 @@ func (lb *LbaasV1) EnsureLoadBalancer(clusterName string, apiService *v1.Service
 	}
 
 	status := &v1.LoadBalancerStatus{}
-
-	status.Ingress = []v1.LoadBalancerIngress{{IP: vip.Address}}
-
 	if floatingPool != "" && !internalAnnotation {
 		floatIPOpts := floatingips.CreateOpts{
 			FloatingNetworkID: floatingPool,
@@ -1472,7 +1470,9 @@ func (lb *LbaasV1) EnsureLoadBalancer(clusterName string, apiService *v1.Service
 			return nil, fmt.Errorf("Error creating floatingip for openstack load balancer %s: %v", name, err)
 		}
 
-		status.Ingress = append(status.Ingress, v1.LoadBalancerIngress{IP: floatIP.FloatingIP})
+		status.Ingress = []v1.LoadBalancerIngress{{IP: floatIP.FloatingIP}}
+	} else {
+		status.Ingress = []v1.LoadBalancerIngress{{IP: vip.Address}}
 	}
 
 	return status, nil