Log4j appender to write to HDFS.
- misc updates
Merge branch 'master' of https://git-wip-us.apache.org/repos/asf/incubator-argus
Merge branch 'master' of https://git-wip-us.apache.org/repos/asf/incubator-argus
Merge branch 'master' of https://git-wip-us.apache.org/repos/asf/incubator-argus.git
ARGUS-5: added support for sending audit logs to HDFS
ARGUS-5: added configurable retry interval between attempts to open HDFS
file.
ARGUS-5: installation updates to configure HDFS audit provider. Added an
option to enable/disable audit to database.
ARGUS-5: log filename generation logic updated to use start-time of the
current rollover period (instead of current time).
ARGUS-5: fix per review comments.