Enable DescribeConsumerGroup test

[PratRanj07]

Enable DescribeConsumerGroup tests for Consumer Protocol

[Copilot]

Pull Request Overview

This PR enables the DescribeConsumerGroup tests under both classic and new consumer protocols by configuring broker timeouts and extending the test helper to verify group type.

• Added low session and heartbeat timeout settings in the KRaft server properties to ensure timely test behavior.
• Extended checkGroupDesc to accept and validate a ConsumerGroupType and updated all test calls accordingly.
• Removed the skip guard so the tests run regardless of the protocol, with logic to adapt expectations based on runtime protocol support.

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
kafka/testresources/kraft/server.properties	Configure group session and heartbeat timeouts for test brokers
kafka/integration_test.go	Add groupType parameter to checkGroupDesc, update calls, and remove skip

Comments suppressed due to low confidence (2)

kafka/integration_test.go:105

• Parameter name 'group_type' uses snake_case; Go convention recommends using camelCase (e.g., 'groupType').

	group_type ConsumerGroupType, group string,

kafka/integration_test.go:101

• [nitpick] Update this comment to mention the newly added 'groupType' parameter so the documentation stays in sync with the function signature.

// checkGroupDesc is a helper function to check the validity of a ConsumerGroupDescription.

[Copilot]

Remove trailing whitespace at the end of this line to prevent potential parsing issues in configuration loading.

Suggested change

	group.consumer.session.timeout.ms=5000
	group.consumer.session.timeout.ms=5000