Migrate to stateless app.App (#17542)

* add request context

* move initialialization to server

* use app interface instead of global app functions

* remove app context from webconn

* cleanup

* remove duplicated services

* move context to separate package

* remove finalize init method and move content to NewServer function

* restart workers and schedulers after adding license for tests

* reflect review comments

Co-authored-by: Mattermod <mattermod@users.noreply.github.com>

api4/remote_cluster.go

@@ -104,7 +104,7 @@ func remoteClusterAcceptMessage(c *Context, w http.ResponseWriter, r *http.Reque
 	auditRec.AddMeta("remoteCluster", rc)
 
 	// pass message to Remote Cluster Service and write response
-	resp := service.ReceiveIncomingMsg(rc, frame.Msg)
+	resp := service.ReceiveIncomingMsg(c.AppContext, rc, frame.Msg)
 
 	b, errMarshall := json.Marshal(resp)
 	if errMarshall != nil {