Mark degeneratesegments GM as flakly on nvpr/ubuntu/debug

expectations/gm/Test-Ubuntu12-ShuttleA-GTX660-x86-Debug/expected-results.json

 {
   "actual-results": {
     "failed": null, 
     "failure-ignored": null, 
     "no-comparison": null, 
     "succeeded": null
   }, 
   "expected-results": {
     "3x3bitmaprect_565.png": {
       "allowed-digests": [
@@ skipping 6905 matching lines @@
       ], 
       "bugs": [
         2325
       ], 
       "reviewed-by-human": false
     }, 
     "degeneratesegments_nvprmsaa4.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
-          215278920234240161
+          4757316088197438923
         ]
       ], 
-      "reviewed-by-human": true
+      "bugs": [
+        2826
+      ], 
+      "ignore-failure": true, 
+      "reviewed-by-human": false
     }, 
     "degeneratesegments_pdf-poppler.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
           10750014273122201477
         ]
       ], 
       "bugs": [
         1578
@@ skipping 12441 matching lines @@
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
           14883391086059083985
         ]
       ], 
       "reviewed-by-human": true
     }
   }
 }