do not import *

Author: zhujt20

integration-test/src/test/java/org/apache/iotdb/db/it/audit/IoTDBAuditLogBasicIT.java

@@ -29,7 +29,11 @@
 import org.apache.iotdb.itbase.runtime.ClusterTestConnection;
 import org.apache.iotdb.itbase.runtime.NodeConnection;
 
-import org.junit.*;
+import org.junit.After;
+import org.junit.Assert;
+import org.junit.Before;
+import org.junit.Ignore;
+import org.junit.Test;
 import org.junit.experimental.categories.Category;
 import org.junit.runner.RunWith;