[exec2] use CREATE_NEW_CONSOLE
[exec2] use CREATE_NEW_CONSOLE

Bug: 962804
Change-Id: I1d5551f18ca7cc557c7d4b608c2699c16ee4a2e4
Reviewed-on: https://chromium-review.googlesource.com/c/infra/luci/luci-go/+/1645069
Commit-Queue: Takuto Ikuta <71927f930fca81015e0f496c65cd126ab1a692e3@chromium.org>
Auto-Submit: Takuto Ikuta <71927f930fca81015e0f496c65cd126ab1a692e3@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