Merge pull request #123 from hluu/master

update to 2.6.2
Merge branch 'master' of https://github.com/azkaban/azkaban-plugins
Merge pull request #127 from hluu/master

Issue #126 Java job type needs to set job id
Merge branch 'master' of https://github.com/azkaban/azkaban-plugins
HadoopSecurityManager_H_2_0 - support retrieving additional HDFS tokens from other namnodes for ETL use cases