kiji-express: EXP-260. HFileKijiJob uses wrong flag convention

 - rename --hFileOutput into --hfile-output

issue: https://jira.kiji.org/browse/EXP-260
review: https://review.kiji.org/r/1283
commit: https://github.com/kijiproject/kiji-express/commit/8c8080d72c3b592f20c2612097066b538b13f833