Added SDN Dashboard helm chart

docs/installation/helm/sdn-dashboard.md

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+# sdn-dashboard
+
+-----------------------
+
+![Version: 1.0.0](https://img.shields.io/badge/Version-1.0.0-informational?style=flat-square) ![AppVersion: 1.0.0](https://img.shields.io/badge/AppVersion-1.0.0-informational?style=flat-square) 
+
+**Homepage:** <https://www.ovn.org/>
+
+## Source Code
+
+* <https://github.com/ovn-org/ovn-kubernetes>
+
+# sdn-dashboard
+
+This helm chart installs the dashboards for ovn-kubernetes. The dashboards are installed for the following SDN components:
+  - OVN Central / North Daemon
+  - OVN Central / Northbound DB
+  - OVN Central / Southbound DB
+  - OVN Host / Controller
+  - Host / OVS
+  - OVN K8S / Node Agent
+  - OVN K8S / Cluster Manager
+
+```
+helm install sdn-dashboard sdn-dashboard/
+```
+
+
+## Values
+
+<table>
+	<thead>
+		<th>Key</th>
+		<th>Type</th>
+		<th>Default</th>
+		<th>Description</th>
+	</thead>
+	<tbody>
+		<tr>
+			<td>global.enableDPUDashboards</td>
+			<td>bool</td>
+			<td><pre lang="json">
+false
+</pre>
+</td>
+			<td>Displays DPU panels in the dashboards if set to true</td>
+		</tr>
+		<tr>
+			<td>global.namespace</td>
+			<td>string</td>
+			<td><pre lang="json">
+"monitoring"
+</pre>
+</td>
+			<td>Namespace where the dashboards are installed. Same as the namespace where prometheus and grafana are installed.</td>
+		</tr>
+	</tbody>
+</table>
+
+
+
+Before, installing this helm chart, prometheus and grafana must be pre-installed.
+
+## Installing prometheus-grafana helm chart
+
+The [kube-prometheus-stack](https://github.com/prometheus-community/helm-charts/tree/main/charts/kube-prometheus-stack) helm chart installs prometheus and grafana.
+
+```
+helm repo add prometheus-community https://prometheus-community.github.io/helm-charts
+helm install kube-prometheus-stack prometheus-community/kube-prometheus-stack -n <desired_namespace> --set prometheusOperator.tls.enabled=false --set prometheusOperator.admissionWebhooks.enabled=false --set prometheusOperator.admissionWebhooks.patch.enabled=false
+```
+
+By default this chart installs additional, dependent charts:
+- [prometheus-community/kube-state-metrics](https://github.com/prometheus-community/helm-charts/tree/main/charts/kube-state-metrics)
+- [prometheus-community/prometheus-node-exporter](https://github.com/prometheus-community/helm-charts/tree/main/charts/prometheus-node-exporter)
+- [grafana/grafana](https://github.com/grafana/helm-charts/tree/main/charts/grafana)
+
+After configuring Prometheus and Grafana and installing sdn-dashboard helm chart, ovn-kubernetes can be installed and the metrics will be scraped.
+
+## Port Forwarding to access Grafana and Prometheus UI
+
+```
+kubectl -n <desired_namespace> port-forward deployment/kube-prometheus-stack-grafana 3000:3000 --address 0.0.0.0
+
+kubectl -n <desired_namespace> port-forward prometheus-kube-prometheus-stack-prometheus-0 9090:9090 --address 0.0.0.0
+```
+
+### Credentials to access the dashboard
+
+Username: `admin`
+
+Password: `prom-operator`

helm/sdn-dashboard/.helmdocsignore

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+charts

helm/sdn-dashboard/.helmignore

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+# Patterns to ignore when building packages.
+# This supports shell glob matching, relative path matching, and
+# negation (prefixed with !). Only one pattern per line.
+.DS_Store
+# Common VCS dirs
+.git/
+.bzr/
+.bzrignore
+.hg/
+.hgignore
+.svn/
+# Common backup files
+*.swp
+*.bak
+*.tmp
+*.orig
+*~
+# Various IDEs
+.project
+.idea/
+*.tmproj
+.vscode/
+# other files
+*.tgz
+.helmignore
+.helmdocsignore
+verify_digest.sh
+check_lint.sh
+README.md.gotmpl
+README-values.md.gotmpl
+README-deployment.md.gotmpl

helm/sdn-dashboard/CHANGELOG.md

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+# v1.0.0
+- Initial version of sdn-dashboard helm chart
+- Installs grafana dashboards for the following SDN components:
+  - OVN Central / North Daemon
+  - OVN Central / Northbound DB
+  - OVN Central / Southbound DB
+  - OVN Host / Controller
+  - Host / OVS
+  - OVN K8S / Node Agent
+  - OVN K8S / Cluster Manager

helm/sdn-dashboard/Chart.yaml

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+apiVersion: "v2"
+description: "A Helm chart for sdn-dashboard"
+name: "sdn-dashboard"
+version: "1.0.0"
+home: https://www.ovn.org/
+sources:
+  - https://github.com/ovn-org/ovn-kubernetes
+appVersion: "1.0.0"