Remove all framework use of Configuration default args
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Key: HADOOP-7313
URL: https://issues.apache.org/jira/browse/HADOOP-7313
Project: Hadoop Common
Issue Type: Improvement
Components: conf
Affects Versions: 0.21.0
Reporter: E. Sammer
The Hadoop code base should not use the form of Configuration#get*() that
accepts a default.
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