config+pilot: add flag to specify min confs for autopilot agent

config.go

@@ -146,6 +146,7 @@ type autoPilotConfig struct {
 	MinChannelSize int64   `long:"minchansize" description:"The smallest channel that the autopilot agent should create"`
 	MaxChannelSize int64   `long:"maxchansize" description:"The largest channel that the autopilot agent should create"`
 	Private        bool    `long:"private" description:"Whether the channels created by the autopilot agent should be private or not. Private channels won't be announced to the network."`
+	MinConfs       int32   `long:"minconfs" description:"The minimum number of confirmations each of your inputs in funding transactions created by the autopilot agent must have."`
 }
 
 type torConfig struct {
@@ -424,6 +425,12 @@ func loadConfig() (*config, error) {
 		fmt.Fprintln(os.Stderr, err)
 		return nil, err
 	}
+	if cfg.Autopilot.MinConfs < 0 {
+		str := "%s: autopilot.minconfs must be non-negative"
+		err := fmt.Errorf(str, funcName)
+		fmt.Fprintln(os.Stderr, err)
+		return nil, err
+	}
 
 	// Ensure that the specified values for the min and max channel size
 	// don't are within the bounds of the normal chan size constraints.