Fixed import package

Author: matthaios.stavrou

extensions/undertow/runtime/src/main/java/io/quarkus/undertow/runtime/UndertowDeploymentRecorder.java

@@ -10,8 +10,10 @@
 import java.util.Collections;
 import java.util.EventListener;
 import java.util.List;
+import java.util.Locale;
 import java.util.Optional;
 import java.util.Set;
+import java.util.HashSet;
 import java.util.concurrent.CopyOnWriteArrayList;
 import java.util.concurrent.ExecutorService;
 import java.util.function.Supplier;