Deploy istiod to gstg-gitlab-gke cluster
What
The change adds Istio components to the GitLab staging environment's gstg-gitlab-gke cluster. Istio is an open platform to connect, manage, and secure microservices.
Why
Istio Control Plane (istiod) is needed for managing the Istio Service Mesh and Istio Gateways.
Related Issue: https://gitlab.com/gitlab-com/gl-infra/reliability/-/issues/24157
Edited by Marcel Chacon