Description of problem:
Upgrade liquibase library to version 3.x
Version-Release number of selected component (if applicable):
This was tested on both a new, empty database and on top of a Zanata 3.1 baseline database built with Liquibase 2.x.
VERIFIED with Zanata version 3.3.0-SNAPSHOT (20131204-0037)
Closing VERIFIED bugs for Zanata server 3.3.2.