Move DelegatingServerAuthenticationSuccessHandlerTests

Moved from src/test/groovy to src/test/java

Issue gh-5332

web/src/test/groovy/org/springframework/security/web/server/authentication/DelegatingServerAuthenticationSuccessHandlerTests.java → web/src/test/java/org/springframework/security/web/server/authentication/DelegatingServerAuthenticationSuccessHandlerTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2018 the original author or authors.
+ * Copyright 2002-2019 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.