message: Updated test to add env var
diff: @@ -21,6 +21,9 @@ from axpy_pipelined import *
  class TestAxpyPipelined(NgraphTest):
  def test_axpy_pipelined(self):
  + prefetch_env = "NGRAPH_TF_USE_PREFETCH"
  + env_var_map = self.store_env_variables([prefetch_env])
  + self.set_env_variable(buffer_sharing_env, "1")
  input_array, output_array, expected_output_array = run_axpy_pipeline()
  for i in range(1, 10):
  print("Iteration:", i, " Input: ", input_array[i - 1], " Output: ",
  @@ -30,3 +33,5 @@ class TestAxpyPipelined(NgraphTest):
  assert np.allclose(
  output_array[i - 1], expected_output_array[i - 1],
  atol=1e-3), "Output and expected output values don't match"
  + self.unset_env_variable(prefetch_env)
  + self.restore_env_variables(env_var_map)
  