Custom Kafka consumer groups not working in GMS

[rospe]

Describe the bug
GMS is producing errors, when rolled out with limited access rights. In our case, we only allowed GMS to use groups with a specific prefix.
I found that GMS is not aware of those custom groups, even when they are set in the global kafka properties.

Reason being is here: https://github.com/acryldata/datahub-helm/blob/master/charts/datahub/subcharts/datahub-gms/templates/deployment.yaml#L299

We do use standalone consumers and we want to use custom groups at the same time.

Workaround
Added these consumer group names to the ENV manually.

Log extract
2025-02-11 11:36:26,065 [pool-6-thread-1] ERROR c.d.m.d.throttle.KafkaThrottleSensor:252 - Error fetching consumer group offsets.
Caused by: org.apache.kafka.common.errors.GroupAuthorizationException: Group authorization failed.