YARN-6446. addendum patch. Contributed by Rohith Sharma K S.

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/test/java/org/apache/slider/server/appmaster/model/mock/MockProviderService.java

@@ -32,6 +32,7 @@ import org.apache.slider.providers.ProviderRole;
 import org.apache.slider.providers.ProviderService;
 import org.apache.slider.server.appmaster.state.RoleInstance;
 import org.apache.slider.server.appmaster.state.StateAccessForProviders;
+import org.apache.slider.server.appmaster.timelineservice.ServiceTimelinePublisher;
 import org.apache.slider.server.services.yarnregistry.YarnRegistryViewForProviders;
 
 import java.io.IOException;
@@ -139,4 +140,10 @@ public class MockProviderService implements ProviderService {
       ContainerStatus status) {
     return false;
   }
+
+  @Override
+  public void setServiceTimelinePublisher(
+      ServiceTimelinePublisher serviceTimelinePublisher) {
+
+  }
 }