Re-initialize hbase data on every test run

Instead of using HBase to drop all schemas, we just remove entire hbase
directory in HDFS. This is cleaner and faster (few seconds instead of
several minutes).

No longer need to create hbase data directory in puppet, since it will
get created by starting HBase in the test automation.

Clean up old non-HDFS location for HBase data.

Change-Id: Ib55a8e3895ebbcd16c0323f82711a56650ca2f0e
Closes-Bug: 1339408
Merge "Re-initialize hbase data on every test run"