Unignore JUL logging test

Closes gh-1778

spring-boot-project/spring-boot/src/test/java/org/springframework/boot/logging/log4j2/Log4J2LoggingSystemTests.java

@@ -33,7 +33,6 @@ import org.apache.logging.log4j.core.config.Configuration;
 import org.hamcrest.Matcher;
 import org.hamcrest.Matchers;
 import org.junit.Before;
-import org.junit.Ignore;
 import org.junit.Rule;
 import org.junit.Test;
 
@@ -189,7 +188,6 @@ public class Log4J2LoggingSystemTests extends AbstractLoggingSystemTests {
 	}
 
 	@Test
-	@Ignore("Fails on Bamboo")
 	public void loggingThatUsesJulIsCaptured() {
 		this.loggingSystem.beforeInitialize();
 		this.loggingSystem.initialize(null, null, null);