logdog: Update generated protobufs.
logdog: Update generated protobufs.

BUG=
R=iannucci@chromium.org

Review URL: https://codereview.chromium.org/1255523003 .

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