AutoHDFS for getting HDFS delegation token and auto renew.
Merge remote-tracking branch 'upstream/security' into security
Revert "AutoHDFS for getting HDFS delegation token and auto renew."

This reverts commit 3c6930dfe4447b6077916b9f9a07b062141b5305.
STORM-346: added AutoHDFS class that will get hdfs delegation tokens on behalf of users, push it to workers and renew the delegation tokens automatically.
Use TBinaryProtocol without max buffer
Fixed merge error in drpc.clj
STORM-346: added AutoHDFS class that will get hdfs delegation tokens on behalf of users, push it to workers and renew the delegation tokens automatically. INimbusCredentialPlugin is a plugin interfae that will be executed as part of nimbu's submit topology operation and fetch credential from nimbus process on behalf of user. AutoHDFS will renew the tokens on nimbus host as long as credential has more then 24 hours on renew cycle, if tokens are going to expire in next 24 hours then new tokens will be fetched and pushed to all workers.
STORM-346: added AutoHDFS class that will get hdfs delegation tokens on behalf of users, push it to workers and renew the delegation tokens automatically. INimbusCredentialPlugin is a plugin interfae that will be executed as part of nimbu's submit topology operation and fetch credential from nimbus process on behalf of user. AutoHDFS will renew the tokens on nimbus host as long as credential has more then 24 hours on renew cycle, if tokens are going to expire in next 24 hours then new tokens will be fetched and pushed to all workers.
STORM-346: added AutoHDFS class that will get hdfs delegation tokens on behalf of users, push it to workers and renew the delegation tokens automatically. INimbusCredentialPlugin is a plugin interfae that will be executed as part of nimbu's submit topology operation and fetch credential from nimbus process on behalf of user. AutoHDFS will renew the tokens on nimbus host as long as credential has more then 24 hours on renew cycle, if tokens are going to expire in next 24 hours then new tokens will be fetched and pushed to all workers.
Merge branch 'STORM-346' of https://github.com/Parth-Brahmbhatt/incubator-storm into STORM-346

Conflicts:
	storm-core/src/jvm/backtype/storm/Config.java

STORM-346: Oozie style delegation tokens for HDFS