without this change, if you're using some external libraries and you reference them in your DSL, those libraries need to also be used on the consumer side.
with this change, you can set the contractsToYaml property of the plugin, that will convert the contract definitions into YAML, and then generate tests and stubs. We will store the original contract definitions under the originals folder.
fixes#744
before this change the support for Stub Runner Boot with Service Discovery was pretty useless since Stub Runner stubbed service discovery. That makes a lot of sense in unit / integration tests but not when you want to do some version of end to end tests.
With this change you can pass a property to enable automated registration of stubs in Service Discovery.
Technical changes:
* Added Zookeeper registration
* Added Eureka registration
* Added Consul registration
* Added checkstyle plugin - fixed part of exceptions
