[Bisection] Add appspot.com to host name
[Bisection] Add appspot.com to host name

Bug:1295566
Change-Id: Ie297741ab9d8e3180c8bb57cf7c3d10ad4a9a382
Reviewed-on: https://chromium-review.googlesource.com/c/infra/luci/luci-go/+/3878144
Reviewed-by: Matthew Warton <5442985bfd1a148775701611fc78ffe955b8addb@google.com>
Auto-Submit: Tuan Nguyen <7f5d2f4f6ce87649784e35ad551490ab8d89e8eb@google.com>
Commit-Queue: Matthew Warton <5442985bfd1a148775701611fc78ffe955b8addb@google.com>

luci/luci-go,luci/luci-go,luci/luci-go,luci/luci-go,luci/luci-go,luci/luci-go