Use dw dynamic config (#91882)

* Remove kubernetesPlaylists feature_toggle

* Remove unified_storage_mode

* Remove double import

* Read from config instead from feature_toggle

* cover scenario for when unified storage is not defined

* Be temporarily retro compatible with previous feature toggle

* Properly read unified_storage section

* [WIP] Read new format of config

* Fix test

* Fix other tests

* Generate feature flags file

* Use <group>.<resource> schema

* Use <group>.resource format on the FE as well

* Hide UniStore config from Frontend

Signed-off-by: Maicon Costa <maiconscosta@gmail.com>

* unwanted changes

* Use feature toggles in the FE. Enforce FTs are present before enabling dual writing
Co-authored-by: Ryan McKinley <ryantxu@users.noreply.github.com>

* use kubernetes playlists feature toggle on the FE

* Remove unwanted code

* Remove configs from the FE

* Remove commented code

* Add more explicit example

---------

Signed-off-by: Maicon Costa <maiconscosta@gmail.com>
Co-authored-by: Maicon Costa <maiconscosta@gmail.com>

pkg/api/playlist.go

@@ -12,7 +12,7 @@ import (
 	"github.com/grafana/grafana/pkg/api/dtos"
 	"github.com/grafana/grafana/pkg/api/response"
 	"github.com/grafana/grafana/pkg/api/routing"
-	"github.com/grafana/grafana/pkg/apis/playlist/v0alpha1"
+	playlistalpha1 "github.com/grafana/grafana/pkg/apis/playlist/v0alpha1"
 	"github.com/grafana/grafana/pkg/middleware"
 	internalplaylist "github.com/grafana/grafana/pkg/registry/apis/playlist"
 	grafanaapiserver "github.com/grafana/grafana/pkg/services/apiserver"
@@ -27,6 +27,7 @@ import (
 func (hs *HTTPServer) registerPlaylistAPI(apiRoute routing.RouteRegister) {
 	// Register the actual handlers
 	apiRoute.Group("/playlists", func(playlistRoute routing.RouteRegister) {
+		// TODO: remove kubernetesPlaylists feature flag
 		if hs.Features.IsEnabledGlobally(featuremgmt.FlagKubernetesPlaylists) {
 			// Use k8s client to implement legacy API
 			handler := newPlaylistK8sHandler(hs)
@@ -330,7 +331,7 @@ type playlistK8sHandler struct {
 
 func newPlaylistK8sHandler(hs *HTTPServer) *playlistK8sHandler {
 	return &playlistK8sHandler{
-		gvr:                  v0alpha1.PlaylistResourceInfo.GroupVersionResource(),
+		gvr:                  playlistalpha1.PlaylistResourceInfo.GroupVersionResource(),
 		namespacer:           request.GetNamespaceMapper(hs.Cfg),
 		clientConfigProvider: hs.clientConfigProvider,
 	}