* UG & DG updates from Dale. Hopefully the final doc set, but team review still pending.
* Fixed GATEWAY ROLE duplication when HA is deployed (auto deployment mode).
* Fixed the issue with ozzie/hadoop_httpfs init scripts being active
  (CM host inspector - auto deployment mode). Don't use chkconfig --del, use chkconfig
  service off to prevent suceeding service restarts.
* Made the THP regex pattern more specific - match on ^[\t ]* and $ to limit the search
  to line boundaries. Added code to only re-write the THP config files on explicit
  state changes.
Merge pull request #165 from Paul-Webster/pull-req-release-hadoop-2.3-master-a44ab1828bfcf01414b0fe5eb008812b9719ca92

Hadoop 2.3.1 - RC #4 [1/1]
* Enhanced CM API integration robustness when the cluster is in a transitional
  deployment state (asynchronous calls for HDFS format, HDFS/MAPR service startup
  and HDFS/MAPR client configuration deployments).
* Changed the CM asynchronous command handler timeout value from 180 seconds
  to 5 minutes.
* Added code to properly handle cases where CM commands are running asynchronously
  in the background and reach immediate execution timeout. Raise an exception for
  these cases in order to force existing retry loop code execution.
* Changed the outer retry loop "retry_count" from 5 attempts to 10 attempts before
  transferring control to the next chef client run.
* Changed the outer retry loop sleep value from 20 seconds to 60 seconds.
* Smoke tested all changes from a clean install and the Hadoop cluster deployed
  successfully on the initial pass.
Merge pull request #166 from Paul-Webster/pull-req-release-hadoop-2.3-master-dad95d851c1420aec986c1e165a81039417dd0c6

Enhanced CM API integration robustness when the cluster is in a transitional [1/1]
Paul's fix for HAFiler node Gateway role.
Merge pull request #167 from vinayakponangi/pull-req-release-hadoop-2.3-master-afd6f6e1e28803edff4b0d648053218146d6daf0

Paul's fix for HAFiler node Gateway role. [1/1]
Hadoop 2.3.1 doc updates from Dale (fix CDH version number).
Merge pull request #168 from Paul-Webster/pull-req-release-hadoop-2.3-master-76afcefe7f31bbaa0c53d57b39d02c37ccdf6adc

Hadoop 2.3.1 doc updates from Dale (fix CDH version number). [1/1]