adding some flaky gms to ignore

expectations/gm/Test-Win8-ShuttleA-GTX660-x86_64-Debug/expected-results.json

Index: expectations/gm/Test-Win8-ShuttleA-GTX660-x86_64-Debug/expected-results.json
diff --git a/expectations/gm/Test-Win8-ShuttleA-GTX660-x86_64-Debug/expected-results.json b/expectations/gm/Test-Win8-ShuttleA-GTX660-x86_64-Debug/expected-results.json
index d56a3e88404a9febaa5fc8943e4f4196bb3febdc..bd14e90ae676fdb77bd5943c57981cf100ae08b2 100644
--- a/expectations/gm/Test-Win8-ShuttleA-GTX660-x86_64-Debug/expected-results.json
+++ b/expectations/gm/Test-Win8-ShuttleA-GTX660-x86_64-Debug/expected-results.json
@@ -15017,6 +15017,7 @@
           9769883945866659220
         ]
       ], 
+      "ignore-failure": true, 
       "reviewed-by-human": true
     }, 
     "multipicturedraw_invpathclip_tiled_nvprmsaa4.png": {
@@ -21781,4 +21782,4 @@
       "reviewed-by-human": true
     }
   }
-}
+}