[cv] Add Roberto and Scott to the OWNERS.
[cv] Add Roberto and Scott to the OWNERS.

R=ddoman, robertocn, yiwzhang

Change-Id: I260f48e7d889bb2ba725ed520ddc03a96af2f2ba
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/infra/luci/luci-go/+/3198574
Commit-Queue: Roberto Carrillo <b31161e510fbb37f8f70fdcde11530d2bae88470@chromium.org>
Auto-Submit: Andrii Shyshkalov <a30c74fa30536fe7ea81ed6dec202e35e149e1fd@google.com>
Reviewed-by: Roberto Carrillo <b31161e510fbb37f8f70fdcde11530d2bae88470@chromium.org>

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