enable mask rcnn test (#1613)

Author: Lara Haidar

.travis.yml

@@ -54,7 +54,7 @@ before_install:
   - pip install typing
   - |
     if [[ $TRAVIS_PYTHON_VERSION == 3.6 ]]; then
-      pip install onnxruntime
+      pip install -q --user -i https://test.pypi.org/simple/ ort-nightly==1.0.0.dev1123
     fi
   - conda install av -c conda-forge
 

test/test_onnx.py

@@ -329,11 +329,10 @@ def test_paste_mask_in_image(self):
 
         assert torch.all(out2.eq(out_trace2))
 
-    @unittest.skip("Disable test until Resize opset 11 is implemented in ONNX Runtime")
     def test_mask_rcnn(self):
         images, test_images = self.get_test_images()
 
-        model = models.detection.mask_rcnn.maskrcnn_resnet50_fpn(pretrained=True)
+        model = models.detection.mask_rcnn.maskrcnn_resnet50_fpn(pretrained=True, min_size=200, max_size=300)
         model.eval()
         model(images)
         self.run_model(model, [(images,), (test_images,)])