Add ignore_exit_codes param for puppet-masterless provisioner

provisioner/puppet-masterless/provisioner.go

@@ -54,6 +54,9 @@ type Config struct {
 	// The directory from which the command will be executed.
 	// Packer requires the directory to exist when running puppet.
 	WorkingDir string `mapstructure:"working_directory"`
+
+	// If true, packer will ignore all exit-codes from a puppet run
+	IgnoreExitCodes bool `mapstructure:"ignore_exit_codes"`
 }
 
 type Provisioner struct {
@@ -242,7 +245,7 @@ func (p *Provisioner) Provision(ui packer.Ui, comm packer.Communicator) error {
 		return err
 	}
 
-	if cmd.ExitStatus != 0 && cmd.ExitStatus != 2 {
+	if cmd.ExitStatus != 0 && cmd.ExitStatus != 2 && !p.config.IgnoreExitCodes {
 		return fmt.Errorf("Puppet exited with a non-zero exit status: %d", cmd.ExitStatus)
 	}