fix: remove default propagation_exclude_ports from agent.config

Move the PROPAGATION_EXCLUDE_PORTS=8123 config from the global
agent.config default to the clickhouse-0.3.1 E2E test scenario only,
as requested in code review.

Author: daguimu

apm-sniffer/config/agent.config

@@ -220,8 +220,6 @@ plugin.tomcat.collect_http_params=${SW_PLUGIN_TOMCAT_COLLECT_HTTP_PARAMS:false}
 plugin.springmvc.collect_http_params=${SW_PLUGIN_SPRINGMVC_COLLECT_HTTP_PARAMS:false}
 #  This config item controls that whether the HttpClient plugin should collect the parameters of the request
 plugin.httpclient.collect_http_params=${SW_PLUGIN_HTTPCLIENT_COLLECT_HTTP_PARAMS:false}
-#  Comma-separated list of destination ports whose outbound HTTP requests will be completely skipped by the httpclient-4.x interceptor (no exit span created, no sw8 headers injected). Default: 8123 (ClickHouse HTTP interface).
-plugin.httpclient.propagation_exclude_ports=${SW_PLUGIN_HTTPCLIENT_PROPAGATION_EXCLUDE_PORTS:8123}
 #  When `COLLECT_HTTP_PARAMS` is enabled, how many characters to keep and send to the OAP backend, use negative values to keep and send the complete parameters, NB. this config item is added for the sake of performance.  
 plugin.http.http_params_length_threshold=${SW_PLUGIN_HTTP_HTTP_PARAMS_LENGTH_THRESHOLD:1024}
 #  When `include_http_headers` declares header names, this threshold controls the length limitation of all header values. use negative values to keep and send the complete headers. Note. this config item is added for the sake of performance. 

test/plugin/scenarios/clickhouse-0.3.1-scenario/configuration.yml

@@ -20,6 +20,7 @@ healthCheck: http://localhost:8080/clickhouse-scenario/case/healthCheck
 startScript: ./bin/startup.sh
 environment:
   - SW_JDBC_TRACE_SQL_PARAMETERS=true
+  - SW_PLUGIN_HTTPCLIENT_PROPAGATION_EXCLUDE_PORTS=8123
 depends_on:
   - clickhouse-server
 dependencies: