Doc: Use Block Storage API v3
... because v2 API was deprecated during Pike and was already removed
during Xena[1].
[1]
@@ -54,7 +54,7 @@ format::
username: admin
identity_api_version: '3'
region_name: RegionOne
- volume_api_version: '2'
+ volume_api_version: '3'
The clouds.yaml format allows for a set of credentials to be defined for each
named cloud. By default, the tests will use the credentials for the cloud
