Reland "[cv][dev] reduce potential blast radius before the CL purging is deployed."
Reland "[cv][dev] reduce potential blast radius before the CL purging is deployed."

This is a reland of 0e5df3a92f1ed2c8aa3361a0d82047fd69fe2fe7

Original change's description:
> [cv][dev] reduce potential blast radius before the CL purging is deployed.
>
> CL purging is the first action that **may** (but shouldn't) cause harm.
> Furthermore, -dev is autodeployed.
> So, remove big projects from -dev before landing full purging pipeline.
>
> Finally, enable `cq-test` project on -dev.
>
> R=qyearsley, yiwzhang
>
> Bug: 1156241
> Change-Id: If3bb19b7ae2141dfcbf699c2c35c8d8b0b0bb6d1
> Reviewed-on: https://chromium-review.googlesource.com/c/infra/luci/luci-go/+/2741574
> Auto-Submit: Andrii Shyshkalov <a30c74fa30536fe7ea81ed6dec202e35e149e1fd@google.com>
> Reviewed-by: Quinten Yearsley <qyearsley@chromium.org>
> Commit-Queue: Andrii Shyshkalov <a30c74fa30536fe7ea81ed6dec202e35e149e1fd@google.com>

Bug: 1156241
Change-Id: I0f3c1126b043806396bc1d7402dffac93653e122
Reviewed-on: https://chromium-review.googlesource.com/c/infra/luci/luci-go/+/2744141
Commit-Queue: Andrii Shyshkalov <a30c74fa30536fe7ea81ed6dec202e35e149e1fd@google.com>
Reviewed-by: Yiwei Zhang <50b2a565e2e78c292794832469a30ce5abc9959c@google.com>

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