Workaround for EF double quoting issue which causes Musicstore#105

This fix is same as the one in PR here https://github.com/aspnet/MusicStore/pull/110 + some naming feedback from Diego. It did not get checked in earlier. Given this bug still exists in Alpha and this breaks music store scenario we want to check this into Master. Since EF team planned to fix the bug soon anyways we don't plan to patch dev branch with this. 

@divega, @mgirgin please review

P.S. please ignore the branch naming. I started with another change but it got covered by changes Prabu was making but the name stayed :-).