docs: As a user, I want to specify different registries for different routes

[bin-ya]

Description

https://github.com/apache/apisix/blob/master/conf/config-default.yaml#L304-L317
I found that the registries supported in our document are dns, eureka, consul-kv and nacos, but now there are only dns and eureka in config-default.yaml file, so I think it needs to add consul-kv and nacos to config-default.yaml

[Xlight5]

[WeOpenStar] I would like to help

[Xlight5]

try this

nacos:
host:
- "http://${username}:${password}@${host1}:${port1}"
prefix: "/nacos/v1/"
fetch_interval: 30 # default 30 sec
weight: 100 # default 100
timeout:
connect: 2000 # default 2000 ms
send: 2000 # default 2000 ms
read: 5000 # default 5000 ms
consul_kv:
servers:
- "http://127.0.0.1:8500"
- "http://127.0.0.1:8600"
prefix: "upstreams"
skip_keys: # if you need to skip special keys
- "upstreams/unused_api/"
timeout:
connect: 2000 # default 2000 ms
read: 2000 # default 2000 ms
wait: 60 # default 60 sec
weight: 1 # default 1
fetch_interval: 3 # default 3 sec, only take effect for keepalive: false way
keepalive: true # default true, use the long pull way to query consul servers
default_server: # you can define default server when missing hit
host: "127.0.0.1"
port: 20999
metadata:
fail_timeout: 1 # default 1 ms
weight: 1 # default 1
max_fails: 1 # default 1
dump: # if you need, when registered nodes updated can dump into file
path: "logs/consul_kv.dump"
expire: 2592000