AMBARI-9624. Unit Test failure on testGetResources (Yurii Shylov via ncole)

ambari-server/src/main/java/org/apache/ambari/server/controller/internal/UpgradeItemResourceProvider.java

@@ -22,6 +22,7 @@ import java.util.Arrays;
 import java.util.HashMap;
 import java.util.HashSet;
 import java.util.Iterator;
+import java.util.LinkedHashSet;
 import java.util.List;
 import java.util.Map;
 import java.util.Set;
@@ -142,7 +143,7 @@ public class UpgradeItemResourceProvider extends ReadOnlyResourceProvider {
       throws SystemException, UnsupportedPropertyException,
       NoSuchResourceException, NoSuchParentResourceException {
 
-    Set<Resource> results = new HashSet<Resource>();
+    Set<Resource> results = new LinkedHashSet<Resource>();
     Set<String> requestPropertyIds = getRequestPropertyIds(request, predicate);
 
     for (Map<String, Object> propertyMap : getPropertyMaps(predicate)) {