Fixing flaky test testRemoteIndexPathFileExistsAfterMigration (#15977) (#16033)

(cherry picked from commit 1343367)

Signed-off-by: Shubh Sahu <shubhvs@amazon.com>
Signed-off-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>
Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

Author: opensearch-trigger-bot[bot]

server/src/internalClusterTest/java/org/opensearch/remotemigration/RemoteMigrationIndexMetadataUpdateIT.java

@@ -19,7 +19,6 @@
 import org.opensearch.common.settings.Settings;
 import org.opensearch.core.util.FileSystemUtils;
 import org.opensearch.index.remote.RemoteIndexPath;
-import org.opensearch.index.remote.RemoteIndexPathUploader;
 import org.opensearch.index.remote.RemoteStoreEnums;
 import org.opensearch.indices.replication.common.ReplicationType;
 import org.opensearch.test.InternalTestCluster;
@@ -533,17 +532,18 @@ public void testRemoteIndexPathFileExistsAfterMigration() throws Exception {
 
         // validate remote index path file exists
         logger.info("---> Asserting remote index path file exists");
-        String fileNamePrefix = String.join(RemoteIndexPathUploader.DELIMITER, indexUUID, "7", RemoteIndexPath.DEFAULT_VERSION);
 
         assertTrue(FileSystemUtils.exists(translogRepoPath.resolve(RemoteIndexPath.DIR)));
         Path[] files = FileSystemUtils.files(translogRepoPath.resolve(RemoteIndexPath.DIR));
         assertEquals(1, files.length);
-        assertTrue(Arrays.stream(files).anyMatch(file -> file.toString().contains(fileNamePrefix)));
+        logger.info(files[0].toString());
+        assertTrue(Arrays.stream(files).anyMatch(file -> file.toString().contains(indexUUID)));
 
         assertTrue(FileSystemUtils.exists(segmentRepoPath.resolve(RemoteIndexPath.DIR)));
         files = FileSystemUtils.files(segmentRepoPath.resolve(RemoteIndexPath.DIR));
         assertEquals(1, files.length);
-        assertTrue(Arrays.stream(files).anyMatch(file -> file.toString().contains(fileNamePrefix)));
+        logger.info(files[0].toString());
+        assertTrue(Arrays.stream(files).anyMatch(file -> file.toString().contains(indexUUID)));
     }
 
     /**