Fix checkstyle error

hibernate-testing/src/main/java/org/hibernate/testing/orm/junit/BaseUnitTest.java

@@ -1,3 +1,9 @@
+/*
+ * Hibernate, Relational Persistence for Idiomatic Java
+ *
+ * License: GNU Lesser General Public License (LGPL), version 2.1 or later
+ * See the lgpl.txt file in the root directory or http://www.gnu.org/licenses/lgpl-2.1.html
+ */
 package org.hibernate.testing.orm.junit;
 
 import java.lang.annotation.ElementType;