add guard
add --ignore-invalid-flavors option
Calculate compute used via Server objects
Display if resources disks fit in available volume quota

Note: still not calculating persistent_disk from deployment
fixed spec
Compare the # of boot volumes needed with quota available
internal method docs
Display required # instances and available quota remaining
Cache flavors lookup
Merge pull request #1 from cloudfoundry-community/volumes

Volumes - compare deployment's boot volume requirements with quota availability