Ensure unzip is installed prior to invocation
Ensure voumes are formatted and mounted ahead of any service preparation (eg dir creation)
Build against whirr CDH version, to include CDH patches
Add integration test profiles, default, centos, ubuntu
Update ubuntu integration test AMI
Merge pull request #36 from ggear/graham-patch-CDH-13258

CDH-13258: Provide greater coverage on Whirr-CM integration tests