HDFS-4458. In DFSUtil.getNameServiceUris(..), convert default fs URI using NetUtils.createSocketAddr(..) for being consistent with other addresses.  Contributed by Binglin Chang


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1443297 13f79535-47bb-0310-9956-ffa450edef68