Orchestration of OpenStack deployment POC

see included doc/orchestration.md
Moving test methods to rake task
Using hook instead of polling
Added Power State Checks for BMC
Let application inject the hosts to deploy
Fix typo

shutdown -> shutoff
white-space
Use before_provision callback instead of a custom one
Merge pull request #18 from pitr-ch/orchestration

Orchestration of OpenStack deployment POC
Change name of services type.
Merge pull request #25 from knowncitizen/services_type

Change name of services type.