Suppress test262 test that tests duplicate properties

In ES6 duplicate properties are allowed

BUG=
LOG=Y

Review URL: https://codereview.chromium.org/492793002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@23246 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

test/test262/test262.status

@@ -77,6 +77,17 @@
   'S8.5_A2.1': [PASS, FAIL_OK],
   'S8.5_A2.2': [PASS, FAIL_OK],
 
+  # ES6 allows duplicate properties
+  '11.1.5-4-4-a-1-s': [FAIL],
+  '11.1.5_4-4-b-1': [FAIL],
+  '11.1.5_4-4-b-2': [FAIL],
+  '11.1.5_4-4-c-1': [FAIL],
+  '11.1.5_4-4-c-2': [FAIL],
+  '11.1.5_4-4-d-1': [FAIL],
+  '11.1.5_4-4-d-2': [FAIL],
+  '11.1.5_4-4-d-3': [FAIL],
+  '11.1.5_4-4-d-4': [FAIL],
+
   ############################ INVALID TESTS #############################
 
   # The reference value calculated by Test262 is incorrect if you run these