This is the second patch to address IMPALA-4684. The first patch exposed
a transient Zookeeper connection error on RHEL7. This patch introduces a
retry (up to 3 times), and somewhat better logging.
Tested by running tests against an RHEL7 instance and confirming that
all HBase nodes start up.
Change-Id: I44b4eec342addcfe489f94c332bbe14225c9968c
Reviewed-on: http://gerrit.cloudera.org:8080/5554
Reviewed-by: Alex Behm <alex.behm@cloudera.com>
Tested-by: Internal Jenkins