Update cluster role permissions to work with MetalLB 0.13.2+

[ctreatma]

This updates the ClusterRole permissions in the deploy directory to allow CPEM to manage the CRDs used by MetalLB 0.13.2+.

I've tested this against a cluster built with equinix-labs/terraform-equinix-kubernetes-cluster, and was able to confirm that:

• Both helm install ... deploy/chart and kubectl apply -f deploy/template/deployment.yaml succeed
• With the updated permissions, CPEM is able to read & update MetalLB CRDs

After running into persistent cluster creation issues, switched to using cluster-api with a minikube-on-podman management cluster and was able to successfully get MetalLB to assign the CPEM-provisioned IP to a load balancer:

$ kubectl get svc
NAME         TYPE           CLUSTER-IP      EXTERNAL-IP      PORT(S)        AGE
kubernetes   ClusterIP      172.26.0.1      <none>           443/TCP        37m
nginx        LoadBalancer   172.26.78.247   147.28.154.166   80:32699/TCP   21m

Fixes #388