Runs tpl on dashboardsConfigMaps (#10670)

Signed-off-by: Valdis Rigdon <valdis.rigdon@appian.com>

stable/grafana/Chart.yaml

@@ -1,6 +1,6 @@
 apiVersion: v1
 name: grafana
-version: 1.25.1
+version: 1.25.2
 appVersion: 5.4.3
 kubeVersion: "^1.8.0-0"
 description: The leading tool for querying and visualizing time series and metrics.

stable/grafana/templates/deployment.yaml

@@ -276,10 +276,11 @@ spec:
           {{- end }}
         {{- end }}
         {{- if .Values.dashboardsConfigMaps }}
+          {{ $root := . }}
           {{- range $provider, $name := .Values.dashboardsConfigMaps }}
         - name: dashboards-{{ $provider }}
           configMap:
-            name: {{ $name }}
+            name: {{ tpl $name $root }}
           {{- end }}
         {{- end }}
         {{- if not .Values.admin.existingSecret }}