``-os-auth-token=OS_AUTH_TOKEN``
      Defaults to env[OS_AUTH_TOKEN]

``--os-username=OS_USERNAME``
      Defaults to env[OS_USERNAME]

``--os-password=OS_PASSWORD``
      Defaults to env[OS_PASSWORD]

``--os-region-name=OS_REGION_NAME``
      Defaults to env[OS_REGION_NAME]

``--os-tenant-id=OS_TENANT_ID``
      Defaults to env[OS_TENANT_ID]

``--os-tenant-name=OS_TENANT_NAME``
      Defaults to env[OS_TENANT_NAME]

``--os-auth-url=OS_AUTH_URL``
      Defaults to env[OS_AUTH_URL]