[kube-prometheus-stack] - enable remote-write prometheus agent for gprd us-east1-d
What
- Enables remote-write prometheus agent for gprd-us-east1-d
Why
This is being enable so we can test remote-write on production workloads without the risk of breaking out existing deployments.
https://gitlab.com/gitlab-com/gl-infra/reliability/-/issues/24515#note_1587040408