[KIP-848] Run integration tests with both the "classic" and "consumer" consumer groups

[emasab]

[emasab]

@milindl sent a commit, please check again

[emasab]

Yeah, we need to add a test run with classic + kraft. Currently if make testConsumerGroupProtocolClassic return false and run it without TEST_CONSUMER_GROUP_PROTOCOL they pass.

We shouldn't have a flag to check if we have ZK or KRaft so later we can have checks based on AK version: one test with last AK that can run with ZK (3.8), another one with AK 4.0+ using KRaft and "classic" and a third one with 4.0+and "consumer" and we assume KRaft for 4.0 ones