AMBARI-11117. Slider View defaults to 0 for instance count of all components (Gour Saha via smohanty)

contrib/views/slider/src/main/java/org/apache/ambari/view/slider/SliderAppsViewControllerImpl.java

@@ -1008,6 +1008,10 @@ public class SliderAppsViewControllerImpl implements SliderAppsViewController {
             JsonElement componentJson = resourcesObj.get(component.getName());
             if (componentJson != null && componentJson.isJsonObject()) {
               JsonObject componentObj = componentJson.getAsJsonObject();
+              if (componentObj.has("yarn.component.instances")) {
+                component.setInstanceCount(Integer.parseInt(componentObj.get(
+                    "yarn.component.instances").getAsString()));
+              }
               if (componentObj.has("yarn.role.priority")) {
                 component.setPriority(Integer.parseInt(componentObj.get("yarn.role.priority").getAsString()));
               }