disable kafka property in agent.config (#5305)

* disable kafka plugin

* enable docker file of kafka for e2e test

apm-sniffer/config/agent.config

@@ -89,4 +89,4 @@ logging.level=${SW_LOGGING_LEVEL:INFO}
 # plugin.mysql.trace_sql_parameters=${SW_MYSQL_TRACE_SQL_PARAMETERS:false}
 
 # Kafka producer configuration
-plugin.kafka.bootstrap_servers=${SW_KAFKA_BOOTSTRAP_SERVERS:localhost:9092}
+# plugin.kafka.bootstrap_servers=${SW_KAFKA_BOOTSTRAP_SERVERS:localhost:9092}

test/e2e/e2e-test/docker/kafka/Dockerfile.provider

@@ -25,6 +25,8 @@ ADD ${DIST_PACKAGE} .
 RUN tar -zxf apache-skywalking-apm*.gz --strip=1 || true
 RUN mv apache-skywalking-apm-bin/* . || true
 
+RUN sed -i 's/# plugin.kafka.bootstrap_servers/plugin.kafka.bootstrap_servers/g' agent/config/agent.config
+
 # activate kafka-reporter plugin
 RUN mv agent/optional-reporter-plugins/kafka-reporter-plugin-*.jar agent/plugins/ || true