Adapt staging deployment template to reference deployment tag to put

.gitlab/issue_templates/deploy-new-stack-in-staging.md

@@ -9,6 +9,7 @@
 - [ ] [swh-charts](https://gitlab.softwareheritage.org/swh/infra/ci-cd/swh-charts/-/blob/staging/swh/values/staging.yaml?ref_type=heads#L126): Adapt values to reference the new lister and loader
 - [ ] Deploy (push branch and let argocd do its job)
 - [ ] Checks pods are doing their jobs
+- [ ] Tag grafana with "deployment service=loader-<project> service=<lister-project> environment=staging" [1]
 
 Dashboard to follow [1]