Refactor cluster registration

ansible/roles/firstboot/files/ansible_payload/bootstrap/templates/serviceaccount.j2.DISABLED

@@ -0,0 +1,27 @@
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: {{ _template.account.name }}
+  namespace: {{ _template.account.namespace }}
+---
+apiVersion: v1
+kind: Secret
+metadata:
+  name: {{ _template.account.name }}-secret
+  namespace: {{ _template.account.namespace }}
+  annotations:
+    kubernetes.io/service-account.name: {{ _template.account.name }}
+type: kubernetes.io/service-account-token
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRoleBinding
+metadata:
+  name: {{ _template.clusterrolebinding.name }}
+subjects:
+- kind: ServiceAccount
+  name: {{ _template.account.name }}
+  namespace: {{ _template.account.namespace }}
+roleRef:
+  kind: ClusterRole
+  name: cluster-admin
+  apiGroup: rbac.authorization.k8s.io