[ML] Increase wait for templates timeout in tests (#61623) (#61628)

x-pack/plugin/ml/src/test/java/org/elasticsearch/xpack/ml/support/BaseMlIntegTestCase.java

@@ -71,6 +71,7 @@ import java.util.Collections;
 import java.util.List;
 import java.util.concurrent.CountDownLatch;
 import java.util.concurrent.ExecutionException;
+import java.util.concurrent.TimeUnit;
 import java.util.concurrent.atomic.AtomicReference;
 import java.util.function.Consumer;
 
@@ -142,7 +143,7 @@ public abstract class BaseMlIntegTestCase extends ESIntegTestCase {
             ClusterState state = client().admin().cluster().prepareState().get().getState();
             assertTrue("Timed out waiting for the ML templates to be installed",
                     MachineLearning.allTemplatesInstalled(state));
-        });
+        }, 20, TimeUnit.SECONDS);
     }
 
     protected Job.Builder createJob(String id) {