Add support for multiple SR urls in CachedSchemaRegistryClient

[rnpridgeon]

Description

Currently the python client fails to handle multiple schema registry urls. In order to more closely align the python client with its Java counterpart it should be updated to handle multiple URLs.

How to reproduce

Checklist

Please provide the following information:

• [ ] confluent-kafka-python and librdkafka version (confluent_kafka.version() and confluent_kafka.libversion()):
• [ ] Apache Kafka broker version:
• [ ] Client configuration: {...}
• [ ] Operating system:
• [ ] Provide client logs (with 'debug': '..' as necessary)
• [ ] Provide broker log excerpts
• [ ] Critical issue

[higee]

+1

[vemuri-nath]

@rnpridgeon @higee i am facing the same issue, is there a solution or alternative for multiple schema urls ?

[ethanttbui]

wow, this has been here since 2018...