I want to set replace=True during insert, but existing param "replace" cannot be set.

Suggest something like:

generic_transfer.py:

`destination_hook.insert_rows(table=self.destination_table,` rows=results, replace=self.replace)

**Apache Airflow version**: 1.10.13

tests/operators/test_generic_transfer.py
#
#
#
import unittest
from contextlib import closing
import pytest
from parameterized import parameterized
from airflow.models.dag import DAG
from airflow.operators.generic_transfer import GenericTransfer
from airflow.providers.mysql.hooks.mysql import MySqlHook
from airflow.providers.postgres.hooks.postgres import PostgresHook
from airflow.utils import timezone
from tests.providers.mysql.hooks.test_mysql import MySqlContext
DEFAULT_DATE = timezone.datetime(2015, 1, 1)
DEFAULT_DATE_ISO = DEFAULT_DATE.isoformat()
DEFAULT_DATE_DS = DEFAULT_DATE_ISO[:10]
TEST_DAG_ID = 'unit_test_dag'
@pytest.mark.backend("mysql")
class TestMySql(unittest.TestCase):
    def setUp(self):
        args = {'owner': 'airflow', 'start_date': DEFAULT_DATE}
        dag = DAG(TEST_DAG_ID, default_args=args)
        self.dag = dag
    def tearDown(self):