Amend scs-0003 according to 2023-09-07 SIG meeting
Created by: mbuechse
- have one yaml file per type of certificate
- mention that votes have to be announced in advance
Related to https://github.com/SovereignCloudStack/issues/issues/343 .
Created by: mbuechse
Related to https://github.com/SovereignCloudStack/issues/issues/343 .