Merge pull request kubernetes-sigs#2354 from k8s-infra-cherrypick-robot/cherry-pick-2352-to-release-0.11

[release-0.11] 🐛 New IPAddressClaim.ObjectMeta.Labels nil map assign panic

Author: k8s-ci-robot

controllers/openstackserver_controller.go

@@ -602,6 +602,7 @@ func (r *OpenStackServerReconciler) getOrCreateIPAddressClaimForFloatingAddress(
 				},
 			},
 			Finalizers: []string{infrav1.IPClaimMachineFinalizer},
+			Labels:     map[string]string{},
 		},
 		Spec: ipamv1.IPAddressClaimSpec{
 			PoolRef: *poolRef,