Fix waiting for MetalLB controller (kubernetes-sigs#10858)

The current state waiting method is bad to implement.
When changing the deployment version, which is execute with the upgrade_cluster in the previous ansible task: "Kubernetes Apps | Install and configure MetalLB", next ansible task: "Kubernetes Apps | Wait for MetalLB controller to be running" may fall with an error.

roles/kubernetes-apps/metallb/tasks/main.yml

@@ -33,7 +33,7 @@
     - inventory_hostname == groups['kube_control_plane'][0]
 
 - name: Kubernetes Apps | Wait for MetalLB controller to be running
-  command: "{{ bin_dir }}/kubectl -n metallb-system wait --for=condition=ready pod -l app=metallb,component=controller --timeout=2m"
+  command: "{{ bin_dir }}/kubectl rollout status -n metallb-system deployment -l app=metallb,component=controller --timeout=2m"
   become: true
   when:
     - inventory_hostname == groups['kube_control_plane'][0]