without this change the only way to ignore a contract was to provide it in the plugin's config
with this change you can also set it on the contract itself.
fixes#30
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
with this change if in the DSL the regex is not in the valid place - an exception will be thrown
if the regex is passed properly but there is no other value (client / server) - it will get generated
fixes#32
to org.springframework.cloud from org.springframework.cloud.contract
also stopped running an http server if the contract doesn't support it
added back stub runner modules
