kiji-express: EXP-424. Explicitly added all used, but undeclared dependancies in pom files.

review: https://review.kiji.org/r/1760
issue: https://jira.kiji.org/EXP-424
over-the-shoulder-reviewers: ['robertchu']
commit: https://github.com/kijiproject/kiji-express/commit/5c23c26cb82f72acf0bf98c98e0b05dd1d3053a7