multi: Add itest for a failed funding flow.

This adds an itest for a failed funding flow by our peer.

lncfg/dev_integration.go

@@ -2,7 +2,9 @@
 
 package lncfg
 
-import "time"
+import (
+	"time"
+)
 
 // IsDevBuild returns a bool to indicate whether we are in a development
 // environment.
@@ -18,9 +20,29 @@ func IsDevBuild() bool {
 //nolint:lll
 type DevConfig struct {
 	ProcessChannelReadyWait time.Duration `long:"processchannelreadywait" description:"Time to sleep before processing remote node's channel_ready message."`
+	ReservationTimeout      time.Duration `long:"reservationtimeout" description:"The maximum time we keep a pending channel open flow in memory."`
+	ZombieSweeperInterval   time.Duration `long:"zombiesweeperinterval" description:"The time interval at which channel opening flows are evaluated for zombie status."`
 }
 
 // ChannelReadyWait returns the config value `ProcessChannelReadyWait`.
 func (d *DevConfig) ChannelReadyWait() time.Duration {
 	return d.ProcessChannelReadyWait
 }
+
+// GetReservationTimeout returns the config value for `ReservationTimeout`.
+func (d *DevConfig) GetReservationTimeout() time.Duration {
+	if d.ReservationTimeout == 0 {
+		return DefaultReservationTimeout
+	}
+
+	return d.ReservationTimeout
+}
+
+// GetZombieSweeperInterval returns the config value for`ZombieSweeperInterval`.
+func (d *DevConfig) GetZombieSweeperInterval() time.Duration {
+	if d.ZombieSweeperInterval == 0 {
+		return DefaultZombieSweeperInterval
+	}
+
+	return d.ZombieSweeperInterval
+}