[luciexe/host] Disable spy test on Windows, too.
[luciexe/host] Disable spy test on Windows, too.

R=d2bf0fc09b08f7b0888b3ddab32b3e89c7122c8b@chromium.org, smut@google.com, tandrii@chromium.org

Bug: 998936
Change-Id: Ic13629738b1aef3afef7cecca8e87cb16c6c9c28
Reviewed-on: https://chromium-review.googlesource.com/c/infra/luci/luci-go/+/1823877
Commit-Queue: Robbie Iannucci <40f3d43a28ebae3cb819288542e1c84d73d962d5@chromium.org>
Commit-Queue: Marc-Antoine Ruel <d2bf0fc09b08f7b0888b3ddab32b3e89c7122c8b@chromium.org>
Auto-Submit: Robbie Iannucci <40f3d43a28ebae3cb819288542e1c84d73d962d5@chromium.org>
Reviewed-by: Marc-Antoine Ruel <d2bf0fc09b08f7b0888b3ddab32b3e89c7122c8b@chromium.org>

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