add ALLOW_PLAINTEXT_LISTENER env variable to kafka config
add ALLOW_PLAINTEXT_LISTENER env variable to kafka config

The KAFKA_ZOOKEEPER_PROTOCOL environment variable does not configure a secure protocol. Set the environment variable ALLOW_PLAINTEXT_LISTENER=yes to allow the container to be started with a plaintext listener. This is only recommended for development.

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