[skip ci] Add log for test case (#9741)

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

tests/python_client/testcases/test_utility.py

@@ -1106,6 +1106,7 @@ class TestUtilityBase(TestcaseBase):
         method: set left vectors as random vectors, right vectors from collection
         expected: distance calculated successfully
         """
+        log.info("Creating connection")
         self._connect()
         nb = 10
         collection_w, vectors, _, insert_ids = self.init_collection_general(prefix, True, nb)
@@ -1116,9 +1117,11 @@ class TestUtilityBase(TestcaseBase):
         for i in range(middle):
             vectors_r.append(vectors[middle + i])
         op_l = {"float_vectors": vectors_l}
+        log.info("Extracting entities form collections for distance calculating")
         op_r = {"ids": insert_ids[middle:], "collection": collection_w.name,
                 "field": default_field_name}
         params = {metric_field: metric, "sqrt": sqrt}
+        log.info("Calculating distance between vectors and entities")
         self.utility_wrap.calc_distance(op_l, op_r, params,
                                         check_task=CheckTasks.check_distance,
                                         check_items={"vectors_l": vectors_l,