kiji-mapreduce: KIJIMR-276. Add a hadoop2, hbase96 bridge.

issue: https://jira.kiji.org/browse/KIJIMR-276
review: https://review.kiji.org/r/1839
commit: https://github.com/kijiproject/kiji-mapreduce/commit/3c153c3deade2deb0f56d3c16e87988aaabbfac5