[cv][aggremetrics] bump threshold for logging error.
[cv][aggremetrics] bump threshold for logging error.

R=ddoman

Change-Id: I947ea0c992baf5719221e42a336a4fa974bc001a
Reviewed-on: https://chromium-review.googlesource.com/c/infra/luci/luci-go/+/3251576
Commit-Queue: Andrii Shyshkalov <a30c74fa30536fe7ea81ed6dec202e35e149e1fd@google.com>
Commit-Queue: Scott Lee <1dcb292530f82960316cb3d87cd67c3f212b79cb@chromium.org>
Auto-Submit: Andrii Shyshkalov <a30c74fa30536fe7ea81ed6dec202e35e149e1fd@google.com>
Reviewed-by: Scott Lee <1dcb292530f82960316cb3d87cd67c3f212b79cb@chromium.org>

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