Fix flaky RemoteCloseIndexIT test (#18801)

Signed-off-by: Gagan Singh Saini <gagasa@amazon.com>

Author: Gagan6164

server/src/internalClusterTest/java/org/opensearch/indices/state/CloseIndexIT.java

@@ -391,6 +391,7 @@ public void testConcurrentClosesAndOpens() throws Exception {
         }
         refresh(indexName);
         assertIndexIsOpened(indexName);
+        waitForReplication(indexName);
         assertHitCount(
             client().prepareSearch(indexName).setSize(0).setTrackTotalHitsUpTo(TRACK_TOTAL_HITS_ACCURATE).get(),
             indexer.totalIndexedDocs()

server/src/internalClusterTest/java/org/opensearch/indices/state/RemoteCloseIndexIT.java

@@ -10,7 +10,6 @@
 
 import com.carrotsearch.randomizedtesting.annotations.ParametersFactory;
 
-import org.apache.lucene.tests.util.LuceneTestCase;
 import org.opensearch.cluster.metadata.IndexMetadata;
 import org.opensearch.common.settings.Settings;
 import org.opensearch.core.common.unit.ByteSizeUnit;
@@ -25,7 +24,6 @@
 
 import static org.opensearch.common.util.FeatureFlags.WRITABLE_WARM_INDEX_SETTING;
 
-@LuceneTestCase.AwaitsFix(bugUrl = "https://github.com/opensearch-project/OpenSearch/issues/18695")
 public class RemoteCloseIndexIT extends CloseIndexIT {
 
     public RemoteCloseIndexIT(Settings nodeSettings) {