There are some hardcoded keys in use in standard deploys in tests. The goal of this ticket is to remove these hardcoded keys and support generation of new URIs.
No private keys should remain in the github repo.
We should also update the RegistrySigGen such that we remove the private key from the generated file header.
This will trigger a change of all the URIs of our system contracts. We should provide a script to update them automatically.
Hardcoded keys used in standard deploys are removed and replaced with new URIs.