DataNodeCluster and NNStorage always pull fresh entropy
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Key: HDFS-2335
URL: https://issues.apache.org/jira/browse/HDFS-2335
Project: Hadoop HDFS
Issue Type: Improvement
Components: data-node, name-node
Reporter: Eli Collins
Jira for giving DataNodeCluster and NNStorage the same treatment as HDFS-1835.
They're not truly cryptographic uses as well. We should also factor this out to
a utility method, seems like the three uses are slightly different, eg one uses
DFSUtil.getRandom and the other creates a new Random object.
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