Merge pull request #5 from ggear/graham-patch-CDH-10934

CM/whirr Integration
Fixing Hive metastore install on Ubuntu 12.04.
Needed to include retry_helpers in configure now
Reworking data disks to detect/use ephemeral disks if available
Switch to storing Cluster.Instances in CmServerService and filtering host list to find the correct one, rather than making assumptions about hostnames equating to host ids.
Merge pull request #6 from abayer/master

A number of fixes
Added Hue and Oozie, and cut down on the number of API getHosts calls.
Merge pull request #7 from abayer/master

Hue and Oozie added, cut down on API host listing calls
rename whirr-cm roles with nicer 'cm-' prefix