Do not exit kafaka-startup.sh if download fails
Do not exit kafaka-startup.sh if download fails

Misunderstood how this worked. See
https://github.com/wurstmeister/kafka-docker/blob/master/start-kafka.sh#L146

dimagi/commcare-hq,dimagi/commcare-hq,dimagi/commcare-hq,dimagi/commcare-hq,dimagi/commcare-hq