Added CM GATEWAY role to the cluster nodes to properly discover the edge/HA node cases.
Disable the default ozzie and http_httpfs init scripts. CM already handles this in internal service startup.
Merge pull request #163 from Paul-Webster/pull-req-release-hadoop-2.3-master-bb2ad4a817f16ae4742accc2848f6905fb1701d6

Hadoop 2.3.1 fixes for open defects. Changes will be in RC #2. [1/1]