Spin up standard GitLab instance using helm chart on pre-gl-gke-2 cluster

Why?

In order to implement advanced deployment scenarios for AutoDeploy and Releases we need to have GitLab instance installed on pre-gl-gke-2 cluster and expose a custom endpoint. GitLab instance should be installed using Flux.

Acceptance criteria

• GitLab instance is up and running on pre-gl-gke-2 cluster
• Instance UI is accessible through kubectl port-forward
• All custom parameters are configured using Delivery tenant Flux overlay

Not in scope

Setting up a public endpoint for GitLab instance is out of scope for this issue