kiji-mapreduce: KIJIMR-280. Bumps version of CDH5 to bug fix version 5.0.1.

Testing done: mvn clean verify.

issue: https://jira.kiji.org/browse/KIJIMR-280
review: https://review.kiji.org/r/1876
commit: https://github.com/kijiproject/kiji-mapreduce/commit/0304ae38ab7960416b639fe56de7e77cea6f9fad