title: Kafka GroupAuthorizationException while trying to consume a topic
body: <p>We are facing an issue of <code>GroupAuthorizationException</code> while consuming on a Kafka topic.<br>
  In the logs, I could see it is referring to a default consumer group.  </p>
  
  <p>Here is my kafkauser CR who has group defined as happy-user-consumer-group:</p>
  
  <pre><code>apiVersion: kafka.strimzi.io/v1beta1
  kind: KafkaUser
  metadata:
    name: happy-user-consumer
    labels:
      strimzi.io/cluster: cluster1
  spec:
    authentication:
      type: tls
    authorization:
      type: simple
      acls:
        - resource:
            type: topic
            name: happy-topic
            patternType: literal
          operation: Read
          host: "*"
        - resource:
            type: topic
            name: happy-topic
            patternType: literal
          operation: Describe
          host: "*"
       - resource:
            type: group
            name: happy-user-consumer-group
            patternType: literal
          operation: Read
          host: "*"
  </code></pre>
  
  <blockquote>
    <p>Error: org.apache.kafka.common.errors.GroupAuthorizationException: Not
    authorized to access group: console-consumer-4369</p>
  </blockquote>
  
  <p>I am not sure where is it pointing to the console-consumer group. </p>
  
  <p>Also, with the below script, I am not able to list the consumer groups. Do we have any other way to see the list of consumer groups?</p>
  
  <pre><code>./bin/kafka-consumer-groups.sh --bootstrap-server kafka.viswa.com:9094 --command-config /tmp/prod/consumer.properties --list
  </code></pre>
  
  <p>Need help here. </p>