OpenFeature: Add context attributes to frontend settings (#112105)

* Update targeting key to namespace

* Pass eval ctx attributes to frontend

* Add context config to the frontend

* Fix OF namespace not defined in e2e tests

* Set default namespace and targeting key

* remove e2e server config now that namespace is default

---------

Co-authored-by: joshhunt <josh.hunt@grafana.com>

pkg/services/featuremgmt/openfeature.go

@@ -40,7 +40,11 @@ func InitOpenFeatureWithCfg(cfg *setting.Cfg) error {
 	if err != nil {
 		return fmt.Errorf("failed to initialize OpenFeature: %w", err)
 	}
-	openfeature.SetEvaluationContext(openfeature.NewEvaluationContext(cfg.OpenFeature.TargetingKey, cfg.OpenFeature.ContextAttrs))
+	contextAttrs := make(map[string]any)
+	for k, v := range cfg.OpenFeature.ContextAttrs {
+		contextAttrs[k] = v
+	}
+	openfeature.SetEvaluationContext(openfeature.NewEvaluationContext(cfg.OpenFeature.TargetingKey, contextAttrs))
 
 	return nil
 }