[skip e2e] Disable test cases for existing issue (#15422)

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

tests/python_client/testcases/entity/test_insert.py

@@ -535,6 +535,7 @@ class TestInsertBase:
             connect.insert(collection, tmp_entity)
 
     @pytest.mark.tags(CaseLabel.L1)
+    @pytest.mark.xfail(reason="issue 15416")
     # @pytest.mark.timeout(30)
     def test_collection_insert_rows_count_multi_threading(self, args, collection):
         """

tests/python_client/testcases/test_insert_20.py

@@ -645,6 +645,7 @@ class TestInsertOperation(TestcaseBase):
         assert collection_w.num_entities == nb
 
     @pytest.mark.tags(CaseLabel.L1)
+    @pytest.mark.xfail(reason="issue 15416")
     def test_insert_multi_threading(self):
         """
         target: test concurrent insert