Can't get 5.0.0-alpha5 from Maven

Hi Robert,

The XPackTransportClient is new in alpha 5. It looks like there is a bug in the generated pom file for alpha5:

<dependency>
  <groupId>org.elasticsearch.plugin</groupId>
  <artifactId>transport-netty4-client-client</artifactId>
  <version>5.0.0-alpha5</version>
  <scope>compile</scope>
</dependency>

That dependency should just be transport-netty4-client, which is published to maven central. In your build, can you manually exclude the bad dependency and add one for the correct one, which would be (for maven):

<dependency>
  <groupId>org.elasticsearch.plugin</groupId>
  <artifactId>transport-netty4-client</artifactId>
  <version>5.0.0-alpha5</version>
  <scope>compile</scope>
</dependency>