Support :query_api_versions brod option

[Saverio Trioni]

Hi. With some kafka setups, brod fails to request the api versions because apparently the connection is not upgraded to TLS.

Creating a raw brod client with

[
  query_api_versions: false,
  ssl: [...]
]

does not raise any error, but that option is not supported by BroadwayKafka.BrodClient.

Would you consider adding it? Meanwhile I will copy over the module and whitelist the option locally.

[José Valim]

A PR is welcome!