Merge branch 'master' of https://github.com/azkaban/azkaban-plugins
Merge branch 'master' of https://github.com/hluu/azkaban-plugins
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
Merge branch 'master' of https://github.com/hluu/azkaban-plugins
Merge branch 'master' of https://github.com/azkaban/azkaban-plugins
Issue #137 - HdfsBrowserServlet doesn't properly display the error when encounter an exception
Merge pull request #131 from hluu/master

HadoopSecurityManager_H_2_0 - support retrieving additional HDFS tokens from other namnodes for ETL use cases #130