When running regression pipelines on Azure, there is no way how to specify which version we should use for the testing. We are always going with the latest version supported.

It would be great to add a possibility to specify ST_KAFKA_VERSION env variable inside the Azure pipelines, so we could run all the regression test to different Kafka version than latest.

This would be really helpful during the releases of Strimzi, so we will ensure that everything for all the Kafka versions is working properly