Update samples to use specific log configuration

spring-boot-samples/spring-boot-sample-actuator-log4j/src/main/resources/application.properties

-logging.file: /tmp/logs/app.log
+#logging.file: /tmp/logs/app.log
 #server.port: 8080
 #management.port: 8080
 management.address: 127.0.0.1

spring-boot-samples/spring-boot-sample-actuator-log4j2/src/main/resources/application.properties

-logging.file: /tmp/logs/app.log
+#logging.file: /tmp/logs/app.log
 #server.port: 8080
 #management.port: 8080
 management.address: 127.0.0.1

spring-boot-samples/spring-boot-sample-actuator/src/main/resources/application.properties

-logging.file: /tmp/logs/app.log
-logging.level.org.springframework.security: INFO
+# logging.file: /tmp/logs/app.log
+# logging.level.org.springframework.security: INFO
 management.address: 127.0.0.1
 #management.port: 8181
 endpoints.shutdown.enabled: true

spring-boot-samples/spring-boot-sample-actuator/src/main/resources/logback.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+	<include resource="org/springframework/boot/logging/logback/base.xml" />
+	<include resource="org/springframework/boot/logging/logback/console-appender.xml" />
+	<root level="INFO">
+		<appender-ref ref="CONSOLE" />
+	</root>
+</configuration>