Set embedded Kafka server to use localhost as advertised name so it works under all network conditions (#130)

Author: glorat

testkit/src/main/scala/cakesolutions.kafka/testkit/KafkaServer.scala

@@ -31,7 +31,8 @@ object KafkaServer {
  val defaultConfig: Map[String, String] = Map(
  KafkaConfig.BrokerIdProp -> "1",
  KafkaConfig.ReplicaSocketTimeoutMsProp -> "1500",
- KafkaConfig.ControlledShutdownEnableProp -> "true"
+ KafkaConfig.ControlledShutdownEnableProp -> "true",
+ KafkaConfig.AdvertisedHostNameProp -> "localhost"
  )
 
  /**