effective_policy_definition is sometimes an object, sometimes an array

[wjdavis5]

RabbitMQ version
3.7.10
Erlang version
20.3

When calling the API:
/api/queues/VHOST/

The json property for effective_policy_definition
is either a json object if it has a value
or an empty json array if it doesnt have a value:

Empty:
"effective_policy_definition": [],

With value:

"effective_policy_definition": {
            "ha-mode": "exactly",
            "ha-params": 2
        },

This makes serializing the response cumbersome, and the result should be consistent.

[michaelklishin]

#75 and #424 in a different place.