Geo: Update `Bring back primary` docs to include deployments with multiple Geo sites
Problem to solve
The Bring primary back docs only refers to a deploy that contains 1 primary and 1 secondary site. It describes how to re-attach the old primary site as secondary site after a promotion.
Some customers have multiple secondary sites and it is not clear what changes are needed to these sites after one of the secondary sites is promoted.
For example, a deployment has the following A - Primary site B, C, D - Secondary sites
Secondary site B is promoted. The old primary site A, is re-attached as a secondary site. What changes are needed to C and D to allow normal operations.
Proposal
Add detailed instruction for changes needed to secondary sites that have not been part of a promotion/failover process. These sites will need to work with the newly promoted primary.
Who can address the issue
Anyone in the Geo team.