Updating BuildTools from 2.1.3-rtm-15816 to 2.1.3-rtm-15817
Updating BuildTools from 2.1.3-rtm-15816 to 2.1.3-rtm-15817

[auto-updated: buildtools]

aspnet/AspNetCore,aspnet/AspNetCore,aspnet/AspNetCore,aspnet/AspNetCore,aspnet/AspNetCore,aspnet/AspNetCore,aspnet/AspNetCore,aspnet/AspNetCore,aspnet/AspNetCore