YARN-392. Make it possible to specify hard locality constraints in resource requests. (sandyr via tucu)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1488326 13f79535-47bb-0310-9956-ffa450edef68
MAPREDUCE-5275. Bring back a couple of APIs in mapreduce.security.TokenCache for binary compatibility with 1.x mapreduce APIs. Contributed by Mayank Bansal.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1488369 13f79535-47bb-0310-9956-ffa450edef68
Merge remote branch 'origin/trunk' into trunk-gd
Merge remote branch 'origin/trunk-gd' into fb-xxx-hadoop-auth-kerberos-realm-trunk-gd