multi: move failed attempt cfg option to the router subsytem

Previously we had db and application logic mixed on the db level.
We now move the config option KeepFailedPaymentAttempts to the
ChannelRouter level and move it out of the db level.

server.go

@@ -1023,20 +1023,21 @@ func newServer(ctx context.Context, cfg *Config, listenAddrs []net.Addr,
 	}
 
 	s.chanRouter, err = routing.New(routing.Config{
-		SelfNode:           nodePubKey,
-		RoutingGraph:       dbs.GraphDB,
-		Chain:              cc.ChainIO,
-		Payer:              s.htlcSwitch,
-		Control:            s.controlTower,
-		MissionControl:     s.defaultMC,
-		SessionSource:      paymentSessionSource,
-		GetLink:            s.htlcSwitch.GetLinkByShortID,
-		NextPaymentID:      sequencer.NextID,
-		PathFindingConfig:  pathFindingConfig,
-		Clock:              clock.NewDefaultClock(),
-		ApplyChannelUpdate: s.graphBuilder.ApplyChannelUpdate,
-		ClosedSCIDs:        s.fetchClosedChannelSCIDs(),
-		TrafficShaper:      implCfg.TrafficShaper,
+		SelfNode:                  nodePubKey,
+		RoutingGraph:              dbs.GraphDB,
+		Chain:                     cc.ChainIO,
+		Payer:                     s.htlcSwitch,
+		Control:                   s.controlTower,
+		MissionControl:            s.defaultMC,
+		SessionSource:             paymentSessionSource,
+		GetLink:                   s.htlcSwitch.GetLinkByShortID,
+		NextPaymentID:             sequencer.NextID,
+		PathFindingConfig:         pathFindingConfig,
+		Clock:                     clock.NewDefaultClock(),
+		ApplyChannelUpdate:        s.graphBuilder.ApplyChannelUpdate,
+		ClosedSCIDs:               s.fetchClosedChannelSCIDs(),
+		TrafficShaper:             implCfg.TrafficShaper,
+		KeepFailedPaymentAttempts: cfg.KeepFailedPaymentAttempts,
 	})
 	if err != nil {
 		return nil, fmt.Errorf("can't create router: %w", err)