Local Cluster integration test

[mzitnik]

Our goal is to create a ClickHouse local cluster for Integration tests.

• Spin Kafka Confluent Platform / Amazon MSK
• Spin ClickHouse Cluster
• Tests
  • single topic
  • multitopic
• schema validation

[Paultagoras]

I believe we have this setup - the integration tests use Docker images, the exactly-once tests use cloud instances, and the unit tests run using docker as well.

If I'm missing something, please feel free to reopen.