[GitLab Operator] Default to two connections (main, and ci)
As a follow up for this: #1054 (closed)
We should make the GitLab Operator default to two connections.
If there is already an explicit configuration, we should respect that.
This is likely going to be based on gitlab-org/charts/gitlab#4248 (closed)
Documentation Update
This issue should also update the documentation regarding:
- What is changing in this release %16.0 with defaulting to two connections, as opposed to using one connection before.
- Intructions on how to switch back to one connection. Opposite of the existing documentation that has been done prior to %16.0 for the related platform.
- Intructions on how to instruct Omnibus/chart to keep using single connection before upgrading to %16.0 (aka pin)
Notes
- We deliberately make this change in a major version %16.0 because it is a big change.
- Customers can flip it back to false (e.g. if they encounter issues).
Edited by Omar Qunsul