Update openstack-setup to configure cinder types

This change takes advantage of cinder_volume_type and openstack-setup
to configure user-specified cinder volume types. It follows the standard
mechanism for conditionally turning these features on and off.
Remove unecessary cinder yaml config

Based upon feedback in a review, I have removed the unecessary yaml
key for cinder encrypted volume types.
Rename name: to volume_type: for cinder types

In order to make this a little bit easier to understand, rename name:
 to volume_type: for cinder encrypted volume types.
Merge pull request #150 from craigtracey/cinder-setup

Update openstack-setup to configure cinder types