Reland "Reland "[swarming] use go isolated when cipd is enabled by default""
Reland "Reland "[swarming] use go isolated when cipd is enabled by default""

This is a reland of f99488fdc5e41616e6cba5ba91797f5f242ecb30

crrev.com/c/2004649 was made to avoid previous failure.

Original change's description:
> Reland "[swarming] use go isolated when cipd is enabled by default"
>
> This is a reland of 5cabf672123718e8b821d54a078e413a2feb3b22
>
> crrev.com/c/2000354 fixed previous failure.
>
> Original change's description:
> > [swarming] use go isolated when cipd is enabled by default
> >
> > I want to see this on dev today and deploy to prod tomorrow if it looks
> > good.
> >
> > Bug: 932396
> > Change-Id: I496f7baee8209462bf66446519197bc591fedc80
> > Reviewed-on: https://chromium-review.googlesource.com/c/infra/luci/luci-py/+/1997521
> > Commit-Queue: Takuto Ikuta <71927f930fca81015e0f496c65cd126ab1a692e3@chromium.org>
> > Auto-Submit: Takuto Ikuta <71927f930fca81015e0f496c65cd126ab1a692e3@chromium.org>
> > Reviewed-by: Junji Watanabe <aaef61ef98ffea505db831f310be2a0eb8492537@google.com>
>
> Bug: 932396
> Change-Id: I549413a848064df0162f015fd0bb8e7ae2362cc0
> Reviewed-on: https://chromium-review.googlesource.com/c/infra/luci/luci-py/+/2000355
> Commit-Queue: Takuto Ikuta <71927f930fca81015e0f496c65cd126ab1a692e3@chromium.org>
> Reviewed-by: Junji Watanabe <aaef61ef98ffea505db831f310be2a0eb8492537@google.com>

Bug: 932396
Change-Id: I9c90713c94e43fec0913571b50ecfce28ecdf4a2
Reviewed-on: https://chromium-review.googlesource.com/c/infra/luci/luci-py/+/2006287
Commit-Queue: Junji Watanabe <aaef61ef98ffea505db831f310be2a0eb8492537@google.com>
Reviewed-by: Junji Watanabe <aaef61ef98ffea505db831f310be2a0eb8492537@google.com>
Auto-Submit: Takuto Ikuta <71927f930fca81015e0f496c65cd126ab1a692e3@chromium.org>

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