kiji-express: EXP-207. Make entityId available to lifecycle phases.

issue: https://jira.kiji.org/browse/EXP-207
review: https://review.kiji.org/r/1167
commit: https://github.com/kijiproject/kiji-express/commit/b726dea8b4fdef2e8b4dfac7e7e2c39d01538c2e