[KMETA-1541] Update configure to set up SSL for kraft controllers #371
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Old PR (pre-airlock) here - #264
https://confluentinc.atlassian.net/browse/KMETA-1541
We only assign various SSL configs if KAFKA_ADVERTISED_LISTENERS indicates SSL is enabled, which doesn’t work when in KRaft controller-only mode (env var is NOT set in that case). We could check if KAFKA_LISTENER_SECURITY_PROTOCOL_MAP contains CONTROLLER:SSL or CONTROLLER:SASL_SSL in the KRaft case.