Andrew Wang 59a70977c3 HADOOP-13251. Authenticate with Kerberos credentials when renewing KMS delegation token. Contributed by Xiao Chen.
(cherry picked from commit 771f798edf97b27ae003395118c0317b484df6ee)

 Conflicts:
	hadoop-common-project/hadoop-kms/src/test/java/org/apache/hadoop/crypto/key/kms/server/TestKMS.java

(cherry picked from commit d8a69c873725b681b06b116cdd10bdb3c2082963)
2016-06-27 18:29:58 -07:00
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