docs: def volume_delete(self, name):
          '''
          Delete a block device
          '''
          if self.volume_conn is None:
              raise SaltCloudSystemExit('No cinder endpoint available')
          nt_ks = self.volume_conn
          try:
              volume = self.volume_show(name)
          except KeyError as exc:
              raise SaltCloudSystemExit('Unable to find {0} volume: {1}'.format(name, exc))
          if volume['status'] == 'deleted':
              return volume
          response = nt_ks.volumes.delete(volume['id'])
          return volume