fix(ansible): Refactored ansible steps to now install metallb in post… (#58)

* fix(ansible): Refactored ansible steps to now install metallb in post task and verify

roles/k3s/post/tasks/templates/metallb.crs.j2

@@ -0,0 +1,14 @@
+apiVersion: metallb.io/v1beta1
+kind: IPAddressPool
+metadata:
+  name: first-pool
+  namespace: metallb-system
+spec:
+  addresses:
+  - {{ metal_lb_ip_range }}
+---
+apiVersion: metallb.io/v1beta1
+kind: L2Advertisement
+metadata:
+  name: default
+  namespace: metallb-system