Challenge Overview
Topcoder has requested that we move from the kafka SimpleConsumer
this.consumer = new kafka.SimpleConsumer(config.KAFKA_OPTIONS);
To a group consumer, similar to what's seen here:
https://github.com/topcoder-platform/submission-processor/blob/68c1efabe9adb9e67c3a8c425c78a7ae1c030c0f/src/app.js#L14
We should ensure that we add the KAFKA_GROUP_ID to the configuration, document it in the configuration.md and make sure that the receiver and processor both work as expected with the change.