* Introduce new models RoutingTree, RouteDefaults and Route and api-server to serve them that is backed by provisioning notification policy service.
* update method UpdatePolicyTree of notification policy service to return route and new version
* declare new actions alert.notifications.routes:read and alert.notifications.routes:write and two corresponding fixed roles.
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Co-authored-by: Tom Ratcliffe <tom.ratcliffe@grafana.com>
Co-authored-by: Matthew Jacobson <matthew.jacobson@grafana.com>
Previously all receiver modifications were denied with alertingApiServer
enabled. This allows pure creates and deletes through as these specific
cases can be handled simply and without risk of rbac shenanigans.
* introduce alias for json.RawMessage with name RawMessage. This is needed to keep raw JSON and implement a marshaler for YAML, which does not seem to be used but there are tests that fail.
* replace usage of simplejson with RawMessage in NotificationChannelConfig
* remove usage of simplejson in tests
* change migration code to convert simplejson to raw message
