HADOOP-19425. Improve Some Code.

Author: slfan1989

hadoop-tools/hadoop-azure/src/test/java/org/apache/hadoop/fs/azurebfs/services/TestAbfsRenameRetryRecovery.java

@@ -148,8 +148,8 @@ public void testRenameFailuresDueToIncompleteMetadata() throws Exception {
         .isSameAs(recoveredMetaDataIncompleteResult);
     // Verify Incomplete metadata state happened for our second rename call.
     assertTrue(resultOfSecondRenameCall.isIncompleteMetadataState(),
-        "Metadata incomplete state should be true if a rename is "
-        + "retried after no Parent directory is found");
+        "Metadata incomplete state should be true if a rename is " +
+        "retried after no Parent directory is found");
 
 
     // Verify renamePath occurred two times implying a retry was attempted.