Once the upgrade chain has been successfully executed, we could execute the verifier in case it exists and it's not been previously executed.
So, the verifiers:
- Are published under the VerifyProcess interface
- Have a one ore more dependencies on the module services. This way, the verifier will only be ready at the time all the services have been completely upgraded
- Once a verifier has been executed, the user will be able to re-execute it from the Gogo Admin Shell