fixed bug for grafana chart

Author: pghildiyal

yamls/grafana.yaml

@@ -172,6 +172,9 @@ data:
     logs = /var/log/grafana
     plugins = /var/lib/grafana/plugins
     provisioning = /etc/grafana/provisioning
+  dashboardproviders.yaml: |
+    apiVersion: 1
+    providers: []
   download_dashboards.sh: |
     #!/usr/bin/env sh
     set -euf