This is a new Gerrit server that will replace the old review02 server.
We add it to the review-staging group so that manage-projects ignores it
for now. We also give it an empty replication config so that it will not
try to force push repo content to the gitea farm.
This change does not enable any gerrit init, gerrit reindexing, or even
docker compose up the service on the server. That means after it lands
and we're convinced it isn't creating any problems for review02 we will
manually need to sync content from review02 and then manually bring this
server up (which may require an init depending on how much content we
copy).
Depends-On: https://review.opendev.org/c/opendev/zone-opendev.org/+/946711
Change-Id: Iadf0ed75539c7673544bd8d856e0a3832a5541c2
d47c217d17