XD-56 - Switch to use Lettuce driver for Redis
XD-31 Create field value counters
Add InMemory version of field value counters
Refactoring of test cases to use JavaConfig based ContextConfiguration
Add missing copyright and organize imports.
XD-55 SI ServiceActivator for an XD Metrics backed Field Value Counter
Initial implementation.
XD-43: Make repositories implement CrudRepository.
XD-43: Tidy up MetricRepository Javadoc.

May not need this at all now, but retaining it
for the time being.
XD-56 - Switch to use Lettuce driver for Redis
fix loading of redis.xml in spring-xd-dirt
XD-55 SI ServiceActivator for an XD Metrics backed Field Value Counter
Add test for Pojo payload
minor cleanup of test case for tuple
XD-36 HDFS outbound adapter initial commit

ignoring integration test since it requires Hadoop

we should add a JUnit rule to check whether Hadoop is running
sink/hdfs.xml uses namespace