grafana configmap generator tool added

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

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

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

...dashboards-configmap-generator/templates/ConfigMap.header

...a-dashboards-configmap-generator/templates/dashboard.foot

...dashboards-configmap-generator/templates/dashboard.header

...onfigmap-generator/templates/grafana-dashboards/README.md

...tor/templates/grafana-dashboards/all-nodes-dashboard.json

...or/templates/grafana-dashboards/deployment-dashboard.json

...mplates/grafana-dashboards/kubernetes-pods-dashboard.json

...enerator/templates/grafana-dashboards/node-dashboard.json

...r/templates/grafana-dashboards/prometheus-datasource.json

...lates/grafana-dashboards/resource-requests-dashboard.json