Refactor the Hermann::Producer Java-based integration test to respect integration.yml
Refactor the Hermann::Producer Java-based integration test to respect integration.yml

I've also refactored/cleaned it up a bit to make sure it runs properly on my machine

zendesk/Hermann,zendesk/Hermann,mkristian/Hermann,lookout/hermann,rtyler/Hermann,mkristian/Hermann,rtyler/Hermann,braintree/hermann,reiseburo/hermann,lookout/hermann,zendesk/Hermann,braintree/hermann,lookout/hermann,reiseburo/hermann,rtyler/Hermann,braintree/hermann,reiseburo/hermann,mkristian/Hermann