docs: def _check_dynamic_acl_support(self):
          """Log an error if any switches don't support dynamic ACLs"""
          cmds = ['ip access-list openstack-test dynamic',
                  'no ip access-list openstack-test']
          for switch_ip, switch_client in self._switches.items():
              try:
                  self.run_openstack_sg_cmds(cmds)
              except Exception:
                  LOG.error("Switch %s does not support dynamic ACLs. SG "
                            "support will not be enabled on this switch.",
                            switch_ip)