[DOCKER][FRONTEND] Run DarkNet tests

Author: kazum

tests/scripts/task_python_frontend.sh

@@ -30,6 +30,9 @@ python3 -m nose -v nnvm/tests/python/frontend/tensorflow || exit -1
 echo "Running nnvm CoreML frontend test..."
 python3 -m nose -v nnvm/tests/python/frontend/coreml || exit -1
 
+echo "Running nnvm DarkNet frontend test..."
+python3 -m nose -v nnvm/tests/python/frontend/darknet || exit -1
+
 echo "Running relay MXNet frontend test..."
 python3 -m nose -v tests/python/frontend/mxnet || exit -1