Update MetalLB and switch to CRD notation. (#9120)

Signed-off-by: Jeroen Rijken <jeroen.rijken@xs4all.nl>

roles/kubernetes-apps/metallb/templates/layer2.yaml.j2

@@ -0,0 +1,19 @@
+#jinja2: trim_blocks: True, lstrip_blocks: True
+# yamllint disable-file
+---
+
+# Create layer2 configuration
+{% for entry in metallb_config.layer2 %}
+
+---
+# L2 Configuration
+apiVersion: metallb.io/v1beta1
+kind: L2Advertisement
+metadata:
+  name: "{{ entry }}"
+  namespace: metallb-system
+spec:
+  ipAddressPools:
+  - "{{ entry }}"
+
+{% endfor %}