Updating the manifest file for metallb

The metallb deployment images have moved to quay.io from docker.io. Updating the manifests to get the updated images.

Signed-off-by: Aditya Ravishankar <adityaravishankar28@gmail.com>

scripts/cluster/setup_master_node.sh

@@ -36,8 +36,8 @@ kubectl get configmap kube-proxy -n kube-system -o yaml | \
 sed -e "s/strictARP: false/strictARP: true/" | \
 kubectl apply -f - -n kube-system
 
-kubectl apply -f https://raw.githubusercontent.com/metallb/metallb/v0.9.4/manifests/namespace.yaml
-kubectl apply -f https://raw.githubusercontent.com/metallb/metallb/v0.9.4/manifests/metallb.yaml
+kubectl apply -f https://raw.githubusercontent.com/metallb/metallb/v0.12/manifests/namespace.yaml
+kubectl apply -f https://raw.githubusercontent.com/metallb/metallb/v0.12/manifests/metallb.yaml
 kubectl create secret generic -n metallb-system memberlist --from-literal=secretkey="$(openssl rand -base64 128)"
 kubectl apply -f $ROOT/configs/metallb/metallb-configmap.yaml