request help: in balance, set_more_retry can it be based on the response code as a condition ?

[Donghui0]

Issue description

like nginx proxy_next_upstream directive.
For example, in payment scenario routing, the 504 response code does not need to be retried, while the 502 status code does.

Environment

• apisix version (cmd: apisix version):
• OS (cmd: uname -a):
• OpenResty / Nginx version (cmd: nginx -V or openresty -V):
• etcd version, if have (cmd: run curl http://127.0.0.1:9090/v1/server_info to get the info from server-info API):
• apisix-dashboard version, if have:
• luarocks version, if the issue is about installation (cmd: luarocks --version):

[spacewander]

Would you give it a try?