Add features to support ssl_context for producer if broker_producer is used.

[youngsol]

Checklist

• [X] I have included information about relevant versions
• [X] I have verified that the issue persists when using the master branch of Faust.

Steps to reproduce

Tell us what you did to cause something to happen.

Expected behavior

broker_producer config can be set but different security protocol cannot be applied.

Tell us what you expected to happen.

ssl context for producer can be set since broker/consumer machines are different.

Actual behavior

same ssl context is used.

Tell us what happened instead.

Full traceback

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Versions

• Python version 3.8
• Faust version 1.10.4
• Operating system
• Kafka version
• RocksDB version (if applicable)

[wbarnha]

Faust version 1.10.4

Try uninstalling Faust and reinstalling Faust-streaming

[youngsol]

Oops, that's right but I still don't see the producer_ssl_config in document neither in code. faust-streaming==0.10.10

https://github.com/faust-streaming/faust/blob/d9d2d3eef0538c3296f9b7bd2b32777ec4c1cc4d/faust/transport/drivers/aiokafka.py#L1078-L1119

Producer and consumer shares same ssl_context config

[wbarnha]

Could you provide an example of what you're trying to do? Typically I've had no issue using https://faust-streaming.github.io/faust/userguide/settings.html#std-setting-ssl_context to configure my Faust SSL contexts.

[youngsol]

app = faust.App(
    'test',
    broker_consumer=[server1,server2],
    broker_producer=[server3,server4],
    broker_credentials = faust.SSLCredentials(context="some_context")
)

There will be a problem if consumers and producers are set to use different security protocol since [server1.server2] and [server3,server4] are different kafka clusters