message: Update test_fit_a_line.py
  Kill c++ service when env_check started
diff: @@ -20,12 +20,13 @@ class TestFitALine(object):
  serving_util.check_model_data_exist()
  self.get_truth_val_by_inference(self)
  self.serving_util = serving_util
  + self.serving_util.release('service')
  def teardown_method(self):
  print_log(["stderr.log", "stdout.log",
  "log/serving.ERROR", "PipelineServingLogs/pipeline.log"], iden="after predict")
  kill_process(9494)
  - self.serving_util.release()
  + self.serving_util.release('service')
  def get_truth_val_by_inference(self):
  try:
  