Configured log4j for conductor

Makefile

@@ -6,7 +6,7 @@ grpc-java:
 clean:
 	$(MAKE) -C ../grpc-java clean
 
-conductor: conductor-config conductor-service
+conductor: conductor-config log4j-config conductor-service
 	tar xf mender-v2.2.0-1.tar.gz
 	patch -Np1 -d conductor-mender-v2.2.0-1 < conductor-mender-v2.2.0-1-system_protoc.patch
 	patch -Np1 -d conductor-mender-v2.2.0-1 < conductor-mender-v2.2.0-1-temporary_protoc-gen-grpc-java.patch
@@ -23,6 +23,7 @@ conductor: conductor-config conductor-service
 	mkdir -p /opt/conductor
 	cp conductor-mender-v2.2.0-1/server/build/libs/conductor-server-*-all.jar /opt/conductor/conductor-server.jar
 	@echo "$$CONDUCTOR_CONFIG" > /opt/conductor/config.properties
+	@echo "$$LOG4J_CONFIG" > /opt/conductor/log4j.properties
 
 	@echo "$$CONDUCTOR_SERVICE" > /lib/systemd/system/conductor.service
 	systemctl enable conductor.service
@@ -49,6 +50,20 @@ conductor.jetty.server.port=8080
 endef
 export CONDUCTOR_CONFIG
 
+log4j-config:
+define LOG4J_CONFIG
+# Set root logger level to INFO and its only appender to A1.
+log4j.rootLogger=INFO, A1
+
+# A1 is set to be a ConsoleAppender.
+log4j.appender.A1=org.apache.log4j.ConsoleAppender
+
+# A1 uses PatternLayout.
+log4j.appender.A1.layout=org.apache.log4j.PatternLayout
+log4j.appender.A1.layout.ConversionPattern=[%d{ISO8601}] [%t] %-5p %c %x - %m%n
+endef
+export LOG4J_CONFIG
+
 conductor-service:
 define CONDUCTOR_SERVICE
 [Unit]
@@ -60,7 +75,7 @@ Wants=network-online.target redis.service elasticsearch.service
 Type=simple
 User=root
 Group=root
-ExecStart=/opt/jdk/bin/java -jar /opt/conductor/conductor-server.jar /opt/conductor/config.properties
+ExecStart=/opt/jdk/bin/java -jar /opt/conductor/conductor-server.jar /opt/conductor/config.properties /opt/conductor/log4j.properties
 Restart=on-failure
 
 [Install]