Fixed the imports from collapsing into wildcard import

src/main/java/org/elasticsearch/action/bulk/TransportBulkAction.java

@@ -64,7 +64,12 @@
 import org.elasticsearch.transport.TransportService;
 
 import java.net.InetSocketAddress;
-import java.util.*;
+import java.util.Collection;
+import java.util.Map;
+import java.util.Set;
+import java.util.List;
+import java.util.Locale;
+import java.util.ArrayList;
 import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.TimeUnit;
 import java.util.concurrent.atomic.AtomicInteger;