Add reliability-components-istio to kustomization on gstg-gitlab-gke
What
Add reliability-components-istio
kustomization to gstg-gitlab-gke cluster.
Why
Related Issue: https://gitlab.com/gitlab-com/gl-infra/reliability/-/issues/24157
Add reliability-components-istio
kustomization to gstg-gitlab-gke cluster.
Related Issue: https://gitlab.com/gitlab-com/gl-infra/reliability/-/issues/24157