https://bugs.chromium.org/p/chromium/issues/detail?id=583465 added rialto as a compile only step on commit queue

Separately (I can't find a link) rialto runs HW tests on release builds.

The final step is to enable HWTests for rialto on CQ, so any change in CrOS that breaks a rialto test will block the breaking CL before it lands


Probably makes sense to do this after kiosk migration.