Fix HBase clean-up for the case when HDFS is not running

First, extend time-out of node-test. Timeout of node-test at an
inopportune time is what caused HDFS not to be running on new
node.

Second, when prepping HBase, check/start HDFS rather than just
failing when it is not running.

Change-Id: Ic7e1895daf1dfab091af04d67c728bc1e0cb512f