[CDH5] Bump JDBC driver version to 5.2.0-SNAPSHOT

Change-Id: Ib114c7433dea4eef95352aa0e16bee53bfd7b975
Reviewed-on: http://gerrit.sjc.cloudera.com:8080/4413
Reviewed-by: Lenni Kuff <lskuff@cloudera.com>
Tested-by: Henry Robinson <henry@cloudera.com>