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

airflow/operators/generic_transfer.py
"""
    Moves data from a connection to another, assuming that they both
    provide the required methods in their respective hooks. The source hook
    needs to expose a `get_records` method, and the destination a
    `insert_rows` method.
    This is meant to be used on small-ish datasets that fit in memory.
    :param sql: SQL query to execute against the source database. (templated)
    :type sql: str
    :param destination_table: target table. (templated)
    :type destination_table: str
    :param source_conn_id: source connection
    :type source_conn_id: str
    :param destination_conn_id: source connection
    :type destination_conn_id: str
    :param preoperator: sql statement or list of statements to be
        executed prior to loading the data. (templated)
    :type preoperator: str or list[str]
    """
    template_fields = ('sql', 'destination_table', 'preoperator')
    template_ext = (
        '.sql',
        '.hql',
    )
    template_fields_renderers = {"preoperator": "sql"}
    ui_color = '#b0f07c'
    def __init__(