make installconfig a template

roles/prep-work/templates/install-config-sno.yaml.j2

@@ -1,7 +1,7 @@
 apiVersion: v1beta4
 baseDomain: example.com
 metadata:
-  name: sno1
+  name: {{ node.cluster }}
 networking:
   networkType: OVNKubernetes
 compute: