Enable trace logging in failing ml NetworkDisruptionIT

#49908

Author: davidkyle

x-pack/plugin/ml/src/test/java/org/elasticsearch/xpack/ml/integration/NetworkDisruptionIT.java

@@ -13,6 +13,7 @@
 import org.elasticsearch.index.query.QueryBuilders;
 import org.elasticsearch.plugins.Plugin;
 import org.elasticsearch.test.disruption.NetworkDisruption;
+import org.elasticsearch.test.junit.annotations.TestLogging;
 import org.elasticsearch.test.transport.MockTransportService;
 import org.elasticsearch.xpack.core.ml.action.CloseJobAction;
 import org.elasticsearch.xpack.core.ml.action.OpenJobAction;
@@ -38,6 +39,8 @@ protected Collection<Class<? extends Plugin>> nodePlugins() {
         return plugins;
     }
 
+    @TestLogging(value = "org.elasticsearch.persistent.PersistentTasksClusterService:trace",
+            reason = "https://github.com/elastic/elasticsearch/issues/49908")
     public void testJobRelocation() throws Exception {
         internalCluster().ensureAtLeastNumDataNodes(5);
         ensureStableCluster(5);