HDFS-10699. Log object instance get incorrectly in TestDFSAdmin. Contributed by Yiqun Lin

(cherry picked from commit f5e401de3e7ad6e73b07fef1cb5915753b08fbdb)

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/tools/TestDFSAdmin.java

@@ -66,7 +66,7 @@ import static org.mockito.Mockito.mock;
 import static org.mockito.Mockito.when;
 
 public class TestDFSAdmin {
-  private static final Log LOG = LogFactory.getLog(DFSAdmin.class);
+  private static final Log LOG = LogFactory.getLog(TestDFSAdmin.class);
   private Configuration conf = null;
   private MiniDFSCluster cluster;
   private DFSAdmin admin;