RUn ClusterDisruptionIT#testAckedIndexing multiple times on CI

Try to catch the issue with duplicated docs reported in #117024

Author: arteam

muted-tests.yml

@@ -86,9 +86,6 @@ tests:
 - class: org.elasticsearch.versioning.ConcurrentSeqNoVersioningIT
   method: testSeqNoCASLinearizability
   issue: https://github.com/elastic/elasticsearch/issues/117249
-- class: org.elasticsearch.discovery.ClusterDisruptionIT
-  method: testAckedIndexing
-  issue: https://github.com/elastic/elasticsearch/issues/117024
 - class: org.elasticsearch.xpack.inference.InferenceRestIT
   method: test {p0=inference/40_semantic_text_query/Query a field that uses the default ELSER 2 endpoint}
   issue: https://github.com/elastic/elasticsearch/issues/117027

server/src/internalClusterTest/java/org/elasticsearch/discovery/ClusterDisruptionIT.java

@@ -9,6 +9,8 @@
 
 package org.elasticsearch.discovery;
 
+import com.carrotsearch.randomizedtesting.annotations.Repeat;
+
 import org.apache.lucene.index.CorruptIndexException;
 import org.elasticsearch.ElasticsearchException;
 import org.elasticsearch.action.ActionListener;
@@ -33,6 +35,7 @@
 import org.elasticsearch.cluster.service.ClusterService;
 import org.elasticsearch.common.settings.Settings;
 import org.elasticsearch.common.util.concurrent.ConcurrentCollections;
+import org.elasticsearch.core.SuppressForbidden;
 import org.elasticsearch.core.TimeValue;
 import org.elasticsearch.index.VersionType;
 import org.elasticsearch.index.shard.IndexShard;
@@ -110,6 +113,8 @@ static ConflictMode randomMode() {
             + "org.elasticsearch.indices.cluster:TRACE,org.elasticsearch.index.shard:TRACE",
         reason = "Past failures have required a lot of additional logging to debug"
     )
+    @Repeat(iterations = 100)
+    @SuppressForbidden(reason = "run the test multiple times on CI")
     public void testAckedIndexing() throws Exception {
 
         final int seconds = (TEST_NIGHTLY && rarely()) == false ? 1 : 5;