ONNX model failing during setup

[vivekkhandelwal1]

Some of the onnx models are failed during the setup stage with the following error:

Failed test at stage setup with exception:
No onnx model could be found, downloaded, or extracted to /home/vikhande/work/SHARK-TestSuite/alt_e2eshark/test-onnx/fasterrcnn_mobilenet_v3_large_fpn_Opset18_torchvision
Traceback (most recent call last):
  File "/home/vikhande/work/SHARK-TestSuite/alt_e2eshark/./run.py", line 195, in run_tests
    inst.construct_model()
  File "/home/vikhande/work/SHARK-TestSuite/alt_e2eshark/onnx_tests/helper_classes.py", line 261, in construct_model
    raise OSError(
OSError: No onnx model could be found, downloaded, or extracted to /home/vikhande/work/SHARK-TestSuite/alt_e2eshark/test-onnx/fasterrcnn_mobilenet_v3_large_fpn_Opset18_torchvision

Model Impacted: fasterrcnn_mobilenet_v3_large_fpn_Opset18_torchvision