Mute ShrinkIndexIT

This is tracked at https://issues.apache.org/jira/browse/LUCENE-8318

Author: dnhatn

server/src/test/java/org/elasticsearch/action/admin/indices/create/ShrinkIndexIT.java

@@ -23,6 +23,7 @@
 import org.apache.lucene.search.SortField;
 import org.apache.lucene.search.SortedSetSelector;
 import org.apache.lucene.search.SortedSetSortField;
+import org.apache.lucene.util.LuceneTestCase.AwaitsFix;
 import org.elasticsearch.Version;
 import org.elasticsearch.action.admin.cluster.reroute.ClusterRerouteResponse;
 import org.elasticsearch.action.admin.cluster.state.ClusterStateRequest;
@@ -83,6 +84,7 @@ protected Collection<Class<? extends Plugin>> nodePlugins() {
         return Arrays.asList(InternalSettingsPlugin.class);
     }
 
+    @AwaitsFix(bugUrl = "https://issues.apache.org/jira/browse/LUCENE-8318")
     public void testCreateShrinkIndexToN() {
         int[][] possibleShardSplits = new int[][] {{8,4,2}, {9, 3, 1}, {4, 2, 1}, {15,5,1}};
         int[] shardSplits = randomFrom(possibleShardSplits);