Fix failing logback test

See gh-3924

spring-boot-samples/spring-boot-sample-tomcat-jsp/pom.xml

@@ -26,6 +26,10 @@
 			<groupId>org.springframework.boot</groupId>
 			<artifactId>spring-boot-starter-web</artifactId>
 		</dependency>
+		<dependency>
+			<groupId>javax.servlet</groupId>
+			<artifactId>jstl</artifactId>
+		</dependency>
 		<dependency>
 			<groupId>org.springframework.boot</groupId>
 			<artifactId>spring-boot-starter-tomcat</artifactId>
@@ -36,10 +40,6 @@
 			<artifactId>tomcat-embed-jasper</artifactId>
 			<scope>provided</scope>
 		</dependency>
-		<dependency>
-			<groupId>javax.servlet</groupId>
-			<artifactId>jstl</artifactId>
-		</dependency>
 		<dependency>
 			<groupId>org.springframework.boot</groupId>
 			<artifactId>spring-boot-starter-test</artifactId>

spring-boot/src/test/java/org/springframework/boot/logging/logback/LogbackLoggingSystemTests.java

@@ -173,7 +173,7 @@ public class LogbackLoggingSystemTests extends AbstractLoggingSystemTests {
 	@Test
 	public void loggingLevelIsPropagatedToJulI() {
 		this.loggingSystem.beforeInitialize();
-		this.loggingSystem.initialize(null, null);
+		this.loggingSystem.initialize(this.initializationContext, null, null);
 		this.loggingSystem.setLogLevel(getClass().getName(), LogLevel.DEBUG);
 		java.util.logging.Logger julLogger = java.util.logging.Logger
 				.getLogger(getClass().getName());