CDH 4.7

To be deployed after tomorrow's CDH 4.7.x upgrade

Upgrade to Hadoop-: 

Client 4.7.1:
https://repository.cloudera.com/artifactory/cloudera-repos/org/apache/hadoop/hadoop-client/2.0.0-mr1-cdh4.7.1/

Core 4.7.1:
https://repository.cloudera.com/artifactory/cloudera-repos/org/apache/hadoop/hadoop-core/2.0.0-mr1-cdh4.7.1/

Common 4.7.1:
https://repository.cloudera.com/artifactory/cloudera-repos/org/apache/hadoop/hadoop-common/2.0.0-cdh4.7.1/

Not really sure how to verify this works, but I did successfully `mvn install` and `mvn clean package` on my machine.

@yagnik @airhorns