Other updates

Updates to the integration and consumer driven contract tests

The system tests in the command pipeline should only test the create methods. Therefore we've to delete all the test of the command side. And create integration tests for the command side in the command pipeline.

Updates to the start scripts

We've to add the KAFKA_ADDRESS to the test environment start and the canary script:

...
var kafkaAddress = "kafka:9092";
...
dfw.write("        - name: KAFKA_ADDRESS\n");
dfw.write("          value: \"" + kafkaAddress + "\"\n");
...