Apache Druid

You can add additional <https://druid.apache.org/docs/latest/development/extensions-core/kafka-supervisor-reference.html#kafkasupervisorioconfig|consumer properties to the ingestion spec> that are used to establish the connection. Here's an example:

consumerProperties are any <https://kafka.apache.org/documentation/#consumerconfigs|kafka consumer config> setting you want to use, like:
```{
"bootstrap.servers": "&lt;kafka bootstrap servers&gt;",
"security.protocol": "SASL_SSL",  
"sasl.mechanism": "AWS_MSK_IAM",
"sasl.jaas.config": "software.amazon.msk.auth.iam.IAMLoginModule required awsRoleArn='arn:aws:iam::xxxxxxxxx:role/msk-imply-dev' awsRoleSessionName='xxxxxxxx' awsStsRegion='us-east-1';",
"sasl.client.callback.handler.class": "software.amazon.msk.auth.iam.IAMClientCallbackHandler"
}```
