HADOOP-19188. Fix TestHarFileSystem and TestFilterFileSystem failing after bulk delete API got added. (#6848)

Follow up to: HADOOP-18679 Add API for bulk/paged delete of files and objects

Contributed by Mukund Thakur

hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/fs/TestFilterFileSystem.java

@@ -148,6 +148,7 @@ public class TestFilterFileSystem {
 
     FSDataOutputStream append(Path f, int bufferSize,
         Progressable progress, boolean appendToNewBlock) throws IOException;
+    BulkDelete createBulkDelete(Path path) throws IllegalArgumentException, IOException;
   }
 
   @Test

hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/fs/TestHarFileSystem.java

@@ -257,6 +257,8 @@ public class TestHarFileSystem {
         Progressable progress, boolean appendToNewBlock) throws IOException;
 
     Path getEnclosingRoot(Path path) throws IOException;
+
+    BulkDelete createBulkDelete(Path path) throws IllegalArgumentException, IOException;
   }
 
   @Test