Add the initial start of volume operations autmation and tasks.
Move deployments to the service.deploy module starting with volume
operations deployments.
	new file:   service/deploy.py
	modified:   service/drivers/common.py
	modified:   service/tasks/driver.py
	new file:   service/tasks/volume.py
Merge branch 'master' of github.com:iPlantCollaborativeOpenSource/atmosphere