Set cert resolver in notifications-controller (argoproj#15394)

Signed-off-by: Siddhesh Ghadi <[email protected]>

notification_controller/controller/controller.go

@@ -12,6 +12,8 @@ import (
 
 	service "github.com/argoproj/argo-cd/v2/util/notification/argocd"
 
+	argocert "github.com/argoproj/argo-cd/v2/util/cert"
+
 	"k8s.io/apimachinery/pkg/runtime/schema"
 
 	"github.com/argoproj/argo-cd/v2/util/notification/settings"
@@ -21,6 +23,7 @@ import (
 	"github.com/argoproj/notifications-engine/pkg/controller"
 	"github.com/argoproj/notifications-engine/pkg/services"
 	"github.com/argoproj/notifications-engine/pkg/subscriptions"
+	httputil "github.com/argoproj/notifications-engine/pkg/util/http"
 	log "github.com/sirupsen/logrus"
 	v1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
@@ -160,6 +163,9 @@ type notificationController struct {
 }
 
 func (c *notificationController) Init(ctx context.Context) error {
+	// resolve certificates using injected "argocd-tls-certs-cm" ConfigMap
+	httputil.SetCertResolver(argocert.GetCertificateForConnect)
+
 	go c.appInformer.Run(ctx.Done())
 	go c.appProjInformer.Run(ctx.Done())
 	go c.secretInformer.Run(ctx.Done())