enable v2 api hbase tests

- update hbase connection to use in memory connection
- change so we always retrieve table from connection rather than
using obj variable to ensure we're using correct reference
- various fixes to get hbase to behave according to tests

Change-Id: Ie856654b94f1db8e1e4a5d8fcca56631a9726665
Merge "enable v2 api hbase tests"