all: wait NTP synced on Merlin

On some Merlin routers, the time is broken when system reboot, and need
to wait for NTP synced to get the correct time. For fetching API in cd
mode successfully, ctrld need to wait until NTP set the time correctly,
otherwise, the certificate validation would complain.

cmd/ctrld/cli.go

@@ -173,6 +173,13 @@ func initCLI() {
 			// Log config do not have thing to validate, so it's safe to init log here,
 			// so it's able to log information in processCDFlags.
 			initLogging()
+
+			if setupRouter {
+				if err := router.PreStart(); err != nil {
+					mainLog.Fatal().Err(err).Msg("failed to perform router pre-start check")
+				}
+			}
+
 			processCDFlags()
 			if err := ctrld.ValidateConfig(validator.New(), &cfg); err != nil {
 				mainLog.Fatal().Msgf("invalid config: %v", err)