AwaitsFix ml distributed failure test

This one fails pretty consistently on my PRs and locally. Not on command
or anything, but enough to cause me trouble.

Relates #77655

x-pack/plugin/ml/src/internalClusterTest/java/org/elasticsearch/xpack/ml/integration/MlDistributedFailureIT.java

@@ -17,12 +17,10 @@
 import org.elasticsearch.cluster.metadata.Metadata;
 import org.elasticsearch.cluster.node.DiscoveryNode;
 import org.elasticsearch.cluster.node.DiscoveryNodeRole;
-import org.elasticsearch.core.CheckedRunnable;
 import org.elasticsearch.common.bytes.BytesArray;
 import org.elasticsearch.common.bytes.BytesReference;
 import org.elasticsearch.common.settings.Settings;
 import org.elasticsearch.common.unit.ByteSizeValue;
-import org.elasticsearch.core.TimeValue;
 import org.elasticsearch.common.xcontent.DeprecationHandler;
 import org.elasticsearch.common.xcontent.NamedXContentRegistry;
 import org.elasticsearch.common.xcontent.ToXContent;
@@ -31,6 +29,8 @@
 import org.elasticsearch.common.xcontent.XContentParser;
 import org.elasticsearch.common.xcontent.XContentType;
 import org.elasticsearch.common.xcontent.json.JsonXContent;
+import org.elasticsearch.core.CheckedRunnable;
+import org.elasticsearch.core.TimeValue;
 import org.elasticsearch.index.query.QueryBuilders;
 import org.elasticsearch.index.query.TermsQueryBuilder;
 import org.elasticsearch.persistent.PersistentTaskResponse;
@@ -475,6 +475,7 @@ public void testJobRelocationIsMemoryAware() throws Exception {
         });
     }
 
+    @AwaitsFix(bugUrl = "https://github.com/elastic/elasticsearch/issues/77655")
     public void testClusterWithTwoMlNodes_RunsDatafeed_GivenOriginalNodeGoesDown() throws Exception {
         internalCluster().ensureAtMostNumDataNodes(0);
         logger.info("Starting dedicated master node...");