Feature highlights: add setting toggle (#43394)

* Feature highlights: add toggle setting

* Settings: Use provider for 'feature_highlights' section

* Fix frontendsettings API tests

* Document the toggle

Co-authored-by: Joan López de la Franca Beltran <5459617+joanlopez@users.noreply.github.com>
Co-authored-by: Joan López de la Franca Beltran <joanjan14@gmail.com>

pkg/api/frontendsettings.go

@@ -283,6 +283,9 @@ func (hs *HTTPServer) getFrontendSettingsMap(c *models.ReqContext) (map[string]i
 			"enabled": hs.Cfg.SectionWithEnvOverrides("recorded_queries").Key("enabled").MustBool(false),
 		},
 		"unifiedAlertingEnabled": hs.Cfg.UnifiedAlerting.Enabled,
+		"featureHighlights": map[string]bool{
+			"enabled": hs.SettingsProvider.Section("feature_highlights").KeyValue("enabled").MustBool(false),
+		},
 	}
 
 	if hs.Cfg.GeomapDefaultBaseLayerConfig != nil {

pkg/api/frontendsettings_test.go

@@ -44,10 +44,11 @@ func setupTestEnvironment(t *testing.T, cfg *setting.Cfg) (*web.Mux, *HTTPServer
 			Cfg:                   cfg,
 			RendererPluginManager: &fakeRendererManager{},
 		},
-		SQLStore:      sqlStore,
-		pluginStore:   &fakePluginStore{},
-		updateChecker: &updatechecker.Service{},
-		AccessControl: accesscontrolmock.New().WithDisabled(),
+		SQLStore:         sqlStore,
+		SettingsProvider: setting.ProvideProvider(cfg),
+		pluginStore:      &fakePluginStore{},
+		updateChecker:    &updatechecker.Service{},
+		AccessControl:    accesscontrolmock.New().WithDisabled(),
 	}
 
 	m := web.New()