[master] Use the local file system in the single node template

Author: gauravm

Summary:
The single node setup is meant for spinning up a single-node cluster
instantly. Those who need it, should be fine with using the local file system
instead of HDFS, which seems like an overkill.

Test Plan: Started the cluster on my devbox, and it started fine.

Reviewers: aaiyer, liyintang, manukranthk, rshroff

Reviewed By: liyintang

CC: hbase-eng@

Differential Revision: https://phabricator.fb.com/D961347

Task ID: 2757169

git-svn-id: https://svn.apache.org/repos/asf/hbase/branches/0.89-fb@1521568 13f79535-47bb-0310-9956-ffa450edef68