This referendum enables the RFC103 feature in the relay chain runtime. Once enacted, the relay chain  Elastic Scaling feature is complete and live!  RFC103 is a `PoV` replay protection mechanism that is mandatory to be implemented by parachains that will utilise use multiple cores. 

We have successfully performed enabled RFC103 on Kusama with [569](https://kusama.subsquare.io/referenda/569). More details can be found in [this](https://forum.polkadot.network/t/elastic-scaling-wen-500ms-blocks/11971/4?u=sandreim) forum post.

#1721 [Whitelisted Caller] Enable RFC103