Add OWNERS to cipd.
Add OWNERS to cipd.

R=vadimsh@chromium.org

Change-Id: Id7e3ed503246ef95ecfb537037ae95bad134857a
Reviewed-on: https://chromium-review.googlesource.com/899688
Commit-Queue: Robbie Iannucci <40f3d43a28ebae3cb819288542e1c84d73d962d5@chromium.org>
Reviewed-by: Erik Staab <9e0728822fdb2ce07b011b42510312bb837e6a51@chromium.org>

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