Add variant attrs validators to product class
Add variant attrs validators to product class

tfroehlich82/saleor,maferelo/saleor,car3oon/saleor,KenMutemi/saleor,itbabu/saleor,jreigel/saleor,jreigel/saleor,mociepka/saleor,HyperManTT/ECommerceSaleor,mociepka/saleor,UITools/saleor,tfroehlich82/saleor,tfroehlich82/saleor,mociepka/saleor,maferelo/saleor,UITools/saleor,itbabu/saleor,car3oon/saleor,HyperManTT/ECommerceSaleor,maferelo/saleor,UITools/saleor,HyperManTT/ECommerceSaleor,UITools/saleor,car3oon/saleor,jreigel/saleor,KenMutemi/saleor,KenMutemi/saleor,itbabu/saleor,UITools/saleor