BENTO-49: Upgrade to CDH 4.3.0-based code

Update to Bento Cluster 1.2.0.
Update to versions of other Kiji components based on CDH 4.3:
  KijiSchema 1.1.2
  KijiMR 1.0.2
  KijiExpress 0.7.0

Update root pom to 1.1.2-SNAPSHOT