kiji-schema: SCHEMA-813. Split ZooKeeperFactory out of HBaseFactory, remove LocalLock, reference track Curator ZK connections

issue: https://jira.kiji.org/browse/SCHEMA-813
review: https://review.kiji.org/r/1911
commit: https://github.com/kijiproject/kiji-schema/commit/03f70deb40ddd0f6da2d00e083aac658e3eebf2f