code: def delete_tenant(self, tenant):
          
          tenant_id = utils.get_id(tenant)
          uri = "tenants/%s" % tenant_id
          resp, resp_body = self.method_delete(uri)
          if resp.status_code == 404:
              raise exc.TenantNotFound("Tenant '%s' does not exist." % tenant)
docs: ADMIN ONLY. Removes the tenant from the system. There is no 'undo'
          available, so you should be certain that the tenant specified is the
          tenant you wish to delete.