Ignore degeneratesegments for nvprmsaa4 to unbreak the build

expectations/gm/Test-Ubuntu12-ShuttleA-GTX660-x86_64-Release/expected-results.json

 {
   "actual-results": {
     "failed": null, 
     "failure-ignored": null, 
     "no-comparison": null, 
     "succeeded": null
   }, 
   "expected-results": {
     "3x3bitmaprect_565.png": {
       "allowed-digests": [
@@ skipping 7056 matching lines @@
       ], 
       "reviewed-by-human": false
     }, 
     "degeneratesegments_nvprmsaa4.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
           13762763215526500776
         ]
       ], 
+      "ignore-failure": true,
+      "bugs": [
+        2689
+      ],
       "reviewed-by-human": true
     }, 
     "degeneratesegments_pdf-poppler.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
           10750014273122201477
         ]
       ], 
       "bugs": [
@@ skipping 12564 matching lines @@
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
           14883391086059083985
         ]
       ], 
       "reviewed-by-human": true
     }
   }
 }