No support for FetchRequest v10 which is required for ZStd on 2.2.1 brokers

[edenhill]

confluentinc/confluent-kafka-python#858

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This is from the AK source:

 * - {@link Errors#UNSUPPORTED_COMPRESSION_TYPE} If a fetched topic is using a compression type which is
 *     not supported by the fetch request version

Which implies that compression.type=zstd is configured on the topic (broker-side config), but the client is using a FetchRequest version that is too old (<10).
The problem lies in librdkafka, it only implements FetchRequest versions 1, 2, 4 and 11, and broker 2.2.1 supports up to version 10, so librdkafka selects version 4 which does not support ZStd.

We'll fix this for the upcoming v1.5.0 release (mid june).
As a workaround I think you can set the broker's topic configuration compression.type=producer.