feat(grafana): DataSources configurable in values.yaml

!2 #1

templates/GrafanaDatasources.yaml

@@ -0,0 +1,28 @@
+---
+apiVersion: grafana.integreatly.org/v1beta1
+kind: GrafanaDatasourceList
+items:
+  {{ range .Values.nfc_monitoring.grafana.DataSources }}
+  - apiVersion: grafana.integreatly.org/v1beta1
+    kind: GrafanaDatasource
+    metadata:
+      name: {{ .name }}
+      namespace: "{{ $.Values.nfc_monitoring.grafana.namespace }}"
+      labels:
+        app.kubernetes.io/component: dashboard
+        app.kubernetes.io/instance: k8s
+        app.kubernetes.io/name: grafana
+        app.kubernetes.io/managed-by: {{ $.Release.Service }}
+        app.kubernetes.io/part-of: {{ $.Chart.Name }}
+        app.kubernetes.io/version: {{ $.Chart.Version }}
+    spec:
+      instanceSelector:
+        matchLabels:
+          app.kubernetes.io/component: graphing
+          app.kubernetes.io/instance: k8s
+          app.kubernetes.io/name: grafana
+      allowCrossNamespaceImport: true
+      datasource:
+        {{ toYaml . | nindent 8 }}
+
+  {{ end }}