Add StagingRef scenario
Related to gitlab#338977 (closed)
The MR adds a new scenario for StagingRef environment. The plan is to add new QA pipeline for this environment. Validated that new scenario is working locally. Below is more context on what Staging Ref is.
Additionally cleaned up old mentions of GitLab CE in the docs.
Staging Ref
Infrastructure and Quality teams are working currently on adding a new staging environment called Staging Ref where engineers will have full access to Gitlab environment and will be able to test their features without restrictions that they have on the current Staging.
Staging Ref is 10k hybrid environment (GCP) and can be destroyed/rebuilt if needed. Please see the current plan in &6401
-> staging-ref (new) -> QA
/
gstg-migrations -> gstg-cny (new) -> QA (new) -> gstg -> QA -> gprd-migrations -> gprd-cny -> QA -> gprd
Staging Ref is deployed with GitLab Environment Toolkit and will be wired in to the main Deployer pipeline in https://gitlab.com/gitlab-com/gl-infra/infrastructure/-/issues/14046.