YARN-315. Using the common security token protobuf definition from hadoop common. Contributed by Suresh Srinivas.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1429748 13f79535-47bb-0310-9956-ffa450edef68
Merge branch 'trunk' of github.com:griddynamics/yhadoop-common into trunk-gd