Problem statement: During the 4.10-rc cycle, the P CI team discovered that RCs were released sometimes without a nightly ID, this makes it very difficult for the CI team to determine which CI run is related to a particular RC build. 

Per Yaakov's explanation: "While promoting from a nightly is a normal way of creating a stable release, ART has the ability to cherry-pick fixes.  in order to minimise the changes needed to fix late-breaking blocker bugs, that's what they've been doing.  once GA occurs, then the following stable release is likely to go back to being a promoted nightly, and so on."

Need: We need to determine a strategy of how we can address RC releases or zstream releases without a nightly ID.