Remove deprecated configuration in the V3

[spacewander]

Description

Let's remove the deprecated configuration in the APISIX v3, including:

• health_check_retry option

  apisix/apisix/cli/etcd.lua

  Line 201 in 2385768

  -- TODO: remove deprecated health_check_retry option in APISIX v3

• lua_shared_dicts

  apisix/apisix/cli/ops.lua

  Lines 654 to 655 in 2385768

  	stderr:write("lua_shared_dicts is deprecated, " ..
  	"use custom_lua_shared_dict instead\n")

• audience in authz-keycloak

  apisix/apisix/plugins/authz-keycloak.lua

  Lines 123 to 129 in 2385768

  	-- Check for deprecated audience attribute and emit warnings if used.
  	if conf.audience then
  	log.warn("Plugin attribute `audience` is deprecated, use `client_id` instead.")
  	if conf.client_id then
  	log.warn("Ignoring `audience` attribute in favor of `client_id`.")
  	end
  	end

• upstream in mqtt-proxy

  apisix/apisix/stream/plugins/mqtt-proxy.lua

  Line 36 in 2385768

  upstream = {

• scheme in proxy-rewrite

  apisix/apisix/plugins/proxy-rewrite.lua

  Line 71 in 2385768

  scheme = {

• various apisix.real_ip_xxx options

  apisix/apisix/cli/ngx_tpl.lua

  Line 380 in 2385768

  {% print("\nDeprecated: apisix.real_ip_header has been moved to nginx_config.http.real_ip_header. apisix.real_ip_header will be removed in the future version. Please use nginx_config.http.real_ip_header first.\n\n") %}

• some configurations in syslog

  apisix/apisix/plugins/syslog.lua

  Line 62 in 2385768

  conf.max_retry_count = conf.max_retry_times or conf.max_retry_count

• some configurations in error-log-logger

  apisix/apisix/plugins/error-log-logger.lua

  Lines 69 to 74 in 2385768

  	host = {schema_def.host_def, description = "Deprecated, use `tcp.host` instead."},
  	port = {type = "integer", minimum = 0, description = "Deprecated, use `tcp.port` instead."},
  	tls = {type = "boolean", default = false,
  	description = "Deprecated, use `tcp.tls` instead."},
  	tls_server_name = {type = "string",
  	description = "Deprecated, use `tcp.tls_server_name` instead."},

• drop support of service_protocol

  apisix/apisix/schema_def.lua

  Line 613 in 2385768

  service_protocol = {

• move the disable to _meta

  apisix/apisix/plugin.lua

  Line 160 in 2385768

  -- TODO: move the `disable` to `_meta` too

---

• remove old configuration items like port_admin from the configuration file
• remove the expression to determine whether to run the plugin or not inside some plugins (like fault-injection) since feat: supports dynamic control of whether plugins are running #7453 is merged.

[bzp2010]

Maybe we can remove old configuration items like port_admin from the configuration file as well? 🤔

[spacewander]

Maybe we can remove old configuration items like port_admin from the configuration file as well? 🤔

LGTM

[spacewander]

We can also remove the expression to determine whether to run the plugin or not inside some plugins (like fault-injection) since #7453 is merged.

[spacewander]

@tzssangglass
Let's submit PRs to remove them when you have free time.
Don't forget to submit PR per task so we can record them in the changelog.