Andrew Wang d712b2ee3b HADOOP-13155. Implement TokenRenewer to renew and cancel delegation tokens in KMS. Contributed by Xiao Chen.
(cherry picked from commit 713cb71820ad94a5436f35824d07aa12fcba5cc6)

 Conflicts:
	hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/crypto/key/KeyProviderDelegationTokenExtension.java
	hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/DFSUtilClient.java

(cherry picked from commit 03c4724c884b133eeb1114e417f7d49d239f4783)

 Conflicts:
	hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/DFSUtilClient.java
2016-06-03 17:03:40 -07:00
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