CDK-94. Create CDK runtime convenience Maven dependencies

This is an extension of Ryan's work on https://github.com/kite-sdk/kite/pull/78. See https://issues.cloudera.org/browse/CDK-94

Yes, this is needed to run jobs using the local job runner - not tests and not on the cluster. This is done in the dataset-staging example.

It's already not present for CDH5 or Hadoop 2. I don't know if it's needed (or sufficient) for Hadoop 1, but we can add it if needed.