[cv][run] best-effort logging of Run finalization.
[cv][run] best-effort logging of Run finalization.

R=tikuta, yiwzhang

Change-Id: I181f6f3a2c222faafd0b1bdfceeecdc5f1de01cf
Reviewed-on: https://chromium-review.googlesource.com/c/infra/luci/luci-go/+/2933297
Auto-Submit: Andrii Shyshkalov <a30c74fa30536fe7ea81ed6dec202e35e149e1fd@google.com>
Commit-Queue: Takuto Ikuta <71927f930fca81015e0f496c65cd126ab1a692e3@chromium.org>
Reviewed-by: Takuto Ikuta <71927f930fca81015e0f496c65cd126ab1a692e3@chromium.org>

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