The KEDA/CMA autoscaler kafka trigger needs to be updated to handle certs and auth. Today, the only config param that clowder sets for the kafka trigger is the bootstrapServers (and this is just the first server in the list of brokers). We need to
1. include all servers
2. add all the other kafka specific config options that are defined in AppConfig (e.g. sasl, tls, ...anything else?)

Spec for kafka trigger: https://keda.sh/docs/2.18/scalers/apache-kafka/