Above, lines 16-19 should be replace with:

```ruby
auth_host = <%= @identity_endpoint.host %>
auth_port = <%= @identity_endpoint.port %>
auth_protocol = <%= @identity_endpoint.scheme %>
admin_tenant_name = <%= @service_tenant_name %>
admin_user = <%= @service_user %>
admin_password = <%= @service_pass %>
<% if node["nova"]["pki"]["enabled"] %>
signing_dir = <%= node["nova"]["pki"]["signing_dir"] %>
<% end %>
```