Update CASCADE_RCNN_R_50_FPN_GN.yaml

Adding

SCORE_THRESH_TEST: 0.4
NMS_THRESH_TEST: 0.001
NMS_THRESH_CLASS_AGNOSTIC: 0.999

CASCADE_RCNN_R_50_FPN_GN.yaml

@@ -13,6 +13,8 @@ MODEL:
   ROI_HEADS:
     NAME: "CascadeROIHeads"
     NUM_CLASSES: 2
+    SCORE_THRESH_TEST: 0.4
+    NMS_THRESH_TEST: 0.001
   ROI_BOX_HEAD:
     CLS_AGNOSTIC_BBOX_REG: True
   PIXEL_MEAN:
@@ -42,3 +44,4 @@ INPUT:
     - 200
 TEST:
   DETECTIONS_PER_IMAGE: 350
+  NMS_THRESH_CLASS_AGNOSTIC: 0.999