XD-1364 Updated build to use latest spring-data-hadoop 2.0 M6
XD-1364 Update configuration files for XD on YARN
XD-1364 Adding override for spring.yarn.client.launchcontext.includeSystemEnv

- the default will change to 'false' in next SHDP release so this is temporary [SHDP-296]
Added EmbeddedZooKeeper

Added ZooKeeperConnection and ZooKeeperConnectionListener

Moved ZooKeeperConnection bean to the ParentConfiguration