Suggest creating a Kafka Client role (confluent.kafka_client) to configure client machines

[chuck-confluent]

There are a lot of operational best practices to run Kafka clients, not just brokers, that we can help manage with Ansible. This request has a few parts:

• Install the kafka client libraries
• create a client properties file with the appropriate security credentials to connect to the deployed confluent platform
• specify consumer, producer, or kafka streams application
• employ best practices for clients, as outlined in Yeva B's performance tuning whitepaper
• allow for deploying and updating a client application JAR, perhaps even from an artifact repository