routing: process successes in mission control

This commit modifies paymentLifecycle so that it not only feeds
failures into mission control, but successes as well.
This allows for more accurate probability estimates. Previously,
the success probability for a successful pair and a pair with
no history was equal. There was no force that pushed towards
previously successful routes.

cmd/lncli/cmd_query_mission_control.go

@@ -38,10 +38,11 @@ func queryMissionControl(ctx *cli.Context) error {
 	}
 
 	type displayPairHistory struct {
-		NodeFrom, NodeTo  string
-		LastFailTime      int64
-		SuccessProb       float32
-		MinPenalizeAmtSat int64
+		NodeFrom, NodeTo      string
+		LastAttemptSuccessful bool
+		Timestamp             int64
+		SuccessProb           float32
+		MinPenalizeAmtSat     int64
 	}
 
 	displayResp := struct {
@@ -64,11 +65,12 @@ func queryMissionControl(ctx *cli.Context) error {
 		displayResp.Pairs = append(
 			displayResp.Pairs,
 			displayPairHistory{
-				NodeFrom:          hex.EncodeToString(n.NodeFrom),
-				NodeTo:            hex.EncodeToString(n.NodeTo),
-				LastFailTime:      n.LastFailTime,
-				SuccessProb:       n.SuccessProb,
-				MinPenalizeAmtSat: n.MinPenalizeAmtSat,
+				NodeFrom:              hex.EncodeToString(n.NodeFrom),
+				NodeTo:                hex.EncodeToString(n.NodeTo),
+				LastAttemptSuccessful: n.LastAttemptSuccessful,
+				Timestamp:             n.Timestamp,
+				SuccessProb:           n.SuccessProb,
+				MinPenalizeAmtSat:     n.MinPenalizeAmtSat,
 			},
 		)
 	}