Datasource provisioning: should allow one default per organisation

[schweikert]

Currently if I try to provision datasources automatically for our multiple organisations, I get:

Failed to provision Grafana from config. error: datasource.yaml config is invalid. Only one datasource can be marked as default

In datasources.yaml I have something like:

- orgId: 1
  name: prometheus
  type: prometheus
  isDefault: True
  access: proxy
  url: http://prometheus.example.com:9090
- orgId: 2
  name: prometheus
  type: prometheus
  isDefault: True
  access: proxy
  url: http://prometheus.example.com:9090

[bergquist]

This should be fixed in https://github.com/grafana/grafana/blob/master/pkg/services/provisioning/datasources/config_reader.go#L92

[schweikert]

Thank you!