[9.2.x] Backport Contexthandler: Add uname as response header #59930 (#59950)

* Contexthandler: Add uname as response header (#59930)

Signed-off-by: bergquist <carl.bergquist@gmail.com>
(cherry picked from commit 1b676d0d49)

* fixes tests broken due to moved featuremgt package

Signed-off-by: bergquist <carl.bergquist@gmail.com>

Signed-off-by: bergquist <carl.bergquist@gmail.com>

pkg/middleware/middleware_test.go

@@ -636,6 +636,7 @@ func middlewareScenario(t *testing.T, desc string, fn scenarioFunc, cbs ...func(
 		loginMaxLifetime, err := gtime.ParseDuration("30d")
 		require.NoError(t, err)
 		cfg := setting.NewCfg()
+		cfg.IsFeatureToggleEnabled = func(key string) bool { return false }
 		cfg.LoginCookieName = "grafana_session"
 		cfg.LoginMaxLifetime = loginMaxLifetime
 		// Required when rendering errors

pkg/middleware/recovery_test.go

@@ -48,6 +48,7 @@ func panicHandler(c *models.ReqContext) {
 func recoveryScenario(t *testing.T, desc string, url string, fn scenarioFunc) {
 	t.Run(desc, func(t *testing.T) {
 		cfg := setting.NewCfg()
+		cfg.IsFeatureToggleEnabled = func(key string) bool { return true }
 		cfg.ErrTemplateName = "error-template"
 		sc := &scenarioContext{
 			t:   t,
@@ -67,7 +68,7 @@ func recoveryScenario(t *testing.T, desc string, url string, fn scenarioFunc) {
 		sc.userAuthTokenService = auth.NewFakeUserAuthTokenService()
 		sc.remoteCacheService = remotecache.NewFakeStore(t)
 
-		contextHandler := getContextHandler(t, nil, nil, nil, nil, nil)
+		contextHandler := getContextHandler(t, cfg, nil, nil, nil, nil)
 		sc.m.Use(contextHandler.Middleware)
 		// mock out gc goroutine
 		sc.m.Use(OrgRedirect(cfg, sc.mockSQLStore))