template: use of InitialConfig to build cluster.yaml (#1824)

this changes cluster.yaml initial skeleton to avoid the use of Config as input

builtin/files/cluster.yaml.tmpl

@@ -1655,7 +1655,7 @@ kubeAwsPlugins:
     #   annotations: {}
     #   # set the ingress hostname to a valid domain that gets routed to your ingress controller
     #   # by default generate a host based on the servicename and clusters apiendpoint dns name.
-    #   hostname: kubernetes-dashboard.ingress.{{ .Config.AdminAPIEndpoint.DNSName }}
+    #   hostname: kubernetes-dashboard.ingress.{{ .ExternalDNSName }}
     #   # set 'supressIngressSecret' to true if you are using something like jetstack cert-manager for auto provisioning ingress certificates
     #   # ingress certificates
     #   supressIngresSecret: false
@@ -1670,4 +1670,4 @@ kubeAwsPlugins:
     #     path:
     #       caPath: credentials/ingress-ca.pem
     #       certPath: credentials/dashboard-ingress.pem
-    #       keyPath: credentials/dashboard-ingress-key.pem
+    #       keyPath: credentials/dashboard-ingress-key.pem