Applied checkstyle

spring-cloud-sleuth-samples/spring-cloud-sleuth-sample/src/test/java/sample/SampleSleuthApplicationTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2013-2018 the original author or authors.
+ * Copyright 2013-2019 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -18,6 +18,7 @@ package sample;
 
 import org.junit.Test;
 import org.junit.runner.RunWith;
+
 import org.springframework.boot.test.context.SpringBootTest;
 import org.springframework.test.context.junit4.SpringRunner;