deploy in python fix to work in @opt mode
Summary: if we let torch_deploy get put in libomnibus, it hides the symbols we need to link against
Test Plan: buck test //caffe2/torch/csrc/deploy:test_deploy_from_python -- --exact 'caffe2/torch/csrc/deploy:test_deploy_from_python - test_deploy_from_python (caffe2.torch.csrc.deploy.test_deploy_from_python.TestDeployFromPython)' --run-disabled
Reviewed By: wconstab
Differential Revision: D30031134
fbshipit-source-id: e5c2f740f17abafec7d01c57c664bd71a00b6f61
