added grafana-deployment updates when configmaps are generated

...ds-configmap-generator/bin/grafana_dashboards_generate.sh

hack/grafana-dashboards-configmap-generator/output/README.md

...gmap-generator/templates/grafana-deployment-original.yaml

...gmap-generator/templates/grafana-deployment-template.yaml

hack/scripts/generate-manifests.sh

manifests/grafana/grafana-dashboards.yaml

manifests/grafana/grafana-deployment.yaml