e(self, host):   # Add the rule   result = host.run(    'stack add host firewall frontend-0-0 service=0000 chain=INPUT '    'action=ACCEPT protocol=TCP network=private'   )   assert result.rc == 0    # Make sure it is in the DB now   result = host.run('stack list host firewall frontend-0-0 output-format=json')   assert result.rc == 0    rule = jmespath.search("[?