[isolated] Use Go isolated to upload result in run_isolated.py
[isolated] Use Go isolated to upload result in run_isolated.py

I believe Go CLI was not enabled in several unit tests, so my concern during the meeting wasn't a real concern..

Bug: 1099655
Change-Id: I4912abaa8af46969f345979bb4274e9daf080779
Reviewed-on: https://chromium-review.googlesource.com/c/infra/luci/luci-py/+/2319812
Reviewed-by: Takuto Ikuta <71927f930fca81015e0f496c65cd126ab1a692e3@chromium.org>
Commit-Queue: Ye Kuang <1cd89f22f3967fc3dcb883b53940be4b98ec483f@google.com>

luci/luci-py,luci/luci-py,luci/luci-py,luci/luci-py