anchor.diff:  ## <a id='global'></a> Global Configuration
   
   See [CPI job configuration](https://bosh.io/jobs/openstack_cpi?source=github.com/cloudfoundry-incubator/bosh-openstack-cpi-release) for details.
  +
  +Schema:
  +
  +* **default_volume_type** [String, optional]: sets volume type for persistent disks unless overridden in resource pool/VM Type. `cinder type-list` will return the available volume types. Example: `SSD`.
   
   Example with Keystone V3:
   
  
positive.code:     region: RegionOne
      default_key_name: bosh
      default_security_groups: [bosh]
  ```
  
  ---
  
negative.code:     default_security_groups: [bosh]
  ```
  
  Example with Keystone V2 and default volume type `ceph`:
  
  ```yaml
  properties:
  