message: Update test_fit_a_line.py
diff: @@ -104,7 +104,7 @@ class TestFitALine(object):
  )
  # 2.resource check
  - assert count_process_num_on_port(9494) == 1
  + assert count_process_num_on_port(9494) == 1, "Please check 'Captured stdout teardown' to refer to stderr log"
  # 4.predict by brpc
  # batch_size 1
  @@ -124,7 +124,7 @@ class TestFitALine(object):
  )
  # 2.resource check
  - assert count_process_num_on_port(9494) == 1
  + assert count_process_num_on_port(9494) == 1, "Please check 'Captured stdout teardown' to refer to stderr log"
  # 4.predict by brpc
  # batch_size 1
  