add clarifying comment for when we can turn this on for dotnet builds
add clarifying comment for when we can turn this on for dotnet builds

diryboy/roslyn,physhi/roslyn,wvdd007/roslyn,KevinRansom/roslyn,davkean/roslyn,jmarolf/roslyn,mgoertz-msft/roslyn,weltkante/roslyn,KirillOsenkov/roslyn,eriawan/roslyn,eriawan/roslyn,mavasani/roslyn,tannergooding/roslyn,mavasani/roslyn,physhi/roslyn,CyrusNajmabadi/roslyn,bartdesmet/roslyn,reaction1989/roslyn,panopticoncentral/roslyn,shyamnamboodiripad/roslyn,panopticoncentral/roslyn,weltkante/roslyn,heejaechang/roslyn,heejaechang/roslyn,AlekseyTs/roslyn,AmadeusW/roslyn,AmadeusW/roslyn,heejaechang/roslyn,aelij/roslyn,sharwell/roslyn,genlu/roslyn,davkean/roslyn,shyamnamboodiripad/roslyn,AlekseyTs/roslyn,tmat/roslyn,eriawan/roslyn,stephentoub/roslyn,tmat/roslyn,CyrusNajmabadi/roslyn,ErikSchierboom/roslyn,AlekseyTs/roslyn,KirillOsenkov/roslyn,gafter/roslyn,jasonmalinowski/roslyn,diryboy/roslyn,aelij/roslyn,genlu/roslyn,dotnet/roslyn,mavasani/roslyn,ErikSchierboom/roslyn,brettfo/roslyn,reaction1989/roslyn,sharwell/roslyn,genlu/roslyn,stephentoub/roslyn,ErikSchierboom/roslyn,dotnet/roslyn,sharwell/roslyn,AmadeusW/roslyn,bartdesmet/roslyn,wvdd007/roslyn,panopticoncentral/roslyn,KirillOsenkov/roslyn,physhi/roslyn,jasonmalinowski/roslyn,tmat/roslyn,jmarolf/roslyn,diryboy/roslyn,shyamnamboodiripad/roslyn,gafter/roslyn,davkean/roslyn,wvdd007/roslyn,reaction1989/roslyn,KevinRansom/roslyn,jasonmalinowski/roslyn,stephentoub/roslyn,gafter/roslyn,brettfo/roslyn,aelij/roslyn,weltkante/roslyn,KevinRansom/roslyn,tannergooding/roslyn,dotnet/roslyn,tannergooding/roslyn,CyrusNajmabadi/roslyn,mgoertz-msft/roslyn,bartdesmet/roslyn,jmarolf/roslyn,mgoertz-msft/roslyn,brettfo/roslyn