1) Fix Guice null binding exception
1) Make it a SNAPSHOT version
[maven-release-plugin] prepare release druid-0.3.27.1
[maven-release-plugin] prepare for next development iteration
1) Fix druid-services to specify server first so that its zk dependencies get taken over realtime's
[maven-release-plugin] prepare release druid-0.3.27.2
madvertise 0.3.27.2