satellite/console: Add trial end notification config to frontendconfig

This backend<->frontend config mapping was unintentionally removed in
commit cd7bb2c.
Add it back so that the satellite UI knows when to warn the user that
trial is about to expire.

Change-Id: I169c5a9e0df5ee8b1593e1b1f1af439539ce2a6a

satellite/console/consoleweb/server.go

@@ -831,6 +831,7 @@ func (server *Server) frontendConfigHandler(w http.ResponseWriter, r *http.Reque
 		AnalyticsEnabled:                server.AnalyticsConfig.Enabled,
 		PlausibleDomain:                 server.AnalyticsConfig.Plausible.Domain,
 		PlausibleScriptUrl:              server.AnalyticsConfig.Plausible.ScriptUrl,
+		DaysBeforeTrialEndNotification:  server.config.DaysBeforeTrialEndNotification,
 	}
 
 	err := json.NewEncoder(w).Encode(&cfg)