kiji-schema: SCHEMA-860. Kiji classpath needs to have Hadoop before HBase

issue: https://jira.kiji.org/browse/SCHEMA-860
review: https://review.kiji.org/r/1996
commit: https://github.com/kijiproject/kiji-schema/commit/4df7435c9329d58aa7eb2e6505037703c96729e4