[Fix] add sync_strategy_data function for BacktestingEngine
[Fix] add sync_strategy_data function for BacktestingEngine

msincenselee/vnpy,msincenselee/vnpy,msincenselee/vnpy,vnpy/vnpy,bigdig/vnpy,bigdig/vnpy,vnpy/vnpy,msincenselee/vnpy,bigdig/vnpy,bigdig/vnpy