How to define a Federation Upstream Set?

[giggsey]

Using the latest master (cc78a33), I'm trying to set a federation-upstream-set to be an array of upstream names.

Code:

    Rabbitmq_parameter { "hydra@/":
      component_name => 'federation-upstream-set',
      value          => [
        {
          'upstream' => 'site-public',
        },
        {
          'upstream' => 'site-private',
        },
      ],
    }

This should be generating the command:

/sbin/rabbitmqctl set_parameter -p / federation-upstream-set hydra '[{"upstream":"site-public"},{"upstream":"site-private"}]'

but is only getting the first item of the array, and trying to execute:

/sbin/rabbitmqctl set_parameter -p / federation-upstream-set hydra {"upstream":"site-public"}

I know the array support is only recent improvement, and hasn't been released yet (although I've been using it to support multiple URIs in federation-upstreams for a while).