chore: publish central images only to gcr (#3614)

## Description

For now, we will publish central images to GCR only, later we'll need to
make sure they are working well in all registries.

## How Has This Been Tested?

<!-- Describe the tests you ran and how you verified your changes. -->

- [ ] Added Unit Tests
- [ ] Updated e2e Tests
- [ ] Manual Testing
- [ ] Manual Load Test

## Kubernetes Checklist

<!-- If this PR affects how Odigos interacts with Kubernetes, check the
relevant boxes below and provide more details -->

- [ ] Changes how Odigos interacts with Kubernetes
- [ ] Introduces additional calls to the API Server (potential
performance impact)
- [ ] New Query/feature supported in all the k8s versions supported by
Odigos
- [ ] Modifies Odigos manifests (addressed in both CLI and Helm)
- [ ] Changes RBAC permissions

## User Facing Changes

<!-- Any changes that users will notice or need to be aware of -->

- [ ] Users need to take action before upgrading
- [ ] Automatic migration will modify existing objects (backward
compatible)
- [ ] Changes UI, CLI, or K8s Manifests aspects in a way that users need
to be aware of
- [ ] Documentation updated accordingly

Author: tamirdavid1

.github/workflows/promote-rc-to-stable.yml

@@ -105,10 +105,9 @@ jobs:
 
       - name: Retag existing images to stable
         run: |
-            ALL_REGISTRIES_IMAGE_NAMES=("odigos-agents" "odigos-autoscaler" "odigos-scheduler" "odigos-instrumentor" "odigos-odiglet" "odigos-collector" "odigos-ui" "odigos-operator" "odigos-enterprise-agents" "odigos-enterprise-instrumentor" "odigos-enterprise-odiglet" "odigos-enterprise-central-backend" "odigos-enterprise-central-proxy" "odigos-enterprise-central-ui")
-            # TODO: Remove ONLY_GCR_IMAGE_NAMES in next release if enterprise images work well in all registries
-            # Kept empty for now in case we need to rollback some images to GCR-only
-            ONLY_GCR_IMAGE_NAMES=()
+            ALL_REGISTRIES_IMAGE_NAMES=("odigos-agents" "odigos-autoscaler" "odigos-scheduler" "odigos-instrumentor" "odigos-odiglet" "odigos-collector" "odigos-ui" "odigos-operator" "odigos-enterprise-agents" "odigos-enterprise-instrumentor" "odigos-enterprise-odiglet")
+            # TODO: make sure central images are working well in all registries
+            ONLY_GCR_IMAGE_NAMES=("odigos-enterprise-central-backend" "odigos-enterprise-central-proxy" "odigos-enterprise-central-ui")
 
             ALL_REGISTRIES=(${GCR_REPO} ${GHCR_REPO} ${DOCKERHUB_REPO})
             UBI9_SUFFIXES=("" "-ubi9")