List nodes

Example response

[
  {
    "name": "some-server-01",
    "hostname": "some-server-01.rmq.cloudamqp.com",
    "configured": true,
    "rabbitmq_version": "3.10.5",
    "erlang_version": "24.1.7",
    "running": true,
    "disk_size": 20,
    "availability_zone": "availability_zone_id",
    "hostname_internal": "some-server-01.in.rmq.cloudamqp.com"
  }
]