[skip ci] Improve code logs (#9347)

Signed-off-by: NBinbin Lv <binbin.lv@zilliz.com>

tests/python_client/testcases/test_utility.py

@@ -998,11 +998,14 @@ class TestUtilityBase(TestcaseBase):
         method: calculated distance with default metric
         expected: distance calculated successfully
         """
+        log.info("Creating connection")
         self._connect()
+        log.info("Creating vectors for distance calculation")
         vectors_l = cf.gen_vectors(default_nb, default_dim)
         vectors_r = cf.gen_vectors(default_nb, default_dim)
         op_l = {"float_vectors": vectors_l}
         op_r = {"float_vectors": vectors_r}
+        log.info("Calculating distance for generated vectors within default metric")
         params = {"sqrt": sqrt}
         self.utility_wrap.calc_distance(op_l, op_r, params,
                                         check_task=CheckTasks.check_distance,