HDFS-14002. TestLayoutVersion#testNameNodeFeatureMinimumCompatibleLayoutVersions fails. Contributed by Takanobu Asanuma.

(cherry picked from commit be1cffb0854cb28967beb062e9db7d61e6eeff1d)

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/protocol/TestLayoutVersion.java

@@ -127,7 +127,8 @@ public class TestLayoutVersion {
         NameNodeLayoutVersion.Feature.TRUNCATE,
         NameNodeLayoutVersion.Feature.APPEND_NEW_BLOCK,
         NameNodeLayoutVersion.Feature.QUOTA_BY_STORAGE_TYPE,
-        NameNodeLayoutVersion.Feature.ERASURE_CODING);
+        NameNodeLayoutVersion.Feature.ERASURE_CODING,
+        NameNodeLayoutVersion.Feature.EXPANDED_STRING_TABLE);
     for (LayoutFeature f : compatibleFeatures) {
       assertEquals(String.format("Expected minimum compatible layout version " +
           "%d for feature %s.", baseLV, f), baseLV,