Fix flaky RepositoriesServiceIT.testCreatSnapAndUpdateReposityCauseInfiniteLoop (#18209)

Signed-off-by: kkewwei <kewei.11@bytedance.com>
Signed-off-by: kkewwei <kkewwei@163.com>

Author: kkewwei

server/src/internalClusterTest/java/org/opensearch/repositories/RepositoriesServiceIT.java

@@ -44,6 +44,7 @@
 
 import java.util.Collection;
 import java.util.Collections;
+import java.util.concurrent.atomic.AtomicInteger;
 
 import static org.opensearch.cluster.metadata.IndexMetadata.SETTING_NUMBER_OF_REPLICAS;
 import static org.opensearch.cluster.metadata.IndexMetadata.SETTING_NUMBER_OF_SHARDS;
@@ -149,9 +150,10 @@ public void testCreatSnapAndUpdateReposityCauseInfiniteLoop() throws Interrupted
             repoSettings
         );
 
-        String snapshotName = "test-snapshot";
+        final AtomicInteger snapshotCount = new AtomicInteger();
         Runnable createSnapshot = () -> {
-            logger.info("--> begining snapshot");
+            String snapshotName = "snapshot-" + snapshotCount.incrementAndGet();
+            logger.info("--> beginning snapshot for " + snapshotName);
             client().admin()
                 .cluster()
                 .prepareCreateSnapshot(repositoryName, snapshotName)