added parameter for setting packer password as env variable

provisioner/ansible/provisioner.go

@@ -57,6 +57,7 @@ type Config struct {
 	UseSFTP              bool     `mapstructure:"use_sftp"`
 	InventoryDirectory   string   `mapstructure:"inventory_directory"`
 	InventoryFile        string   `mapstructure:"inventory_file"`
+	SetPackerPasswd      bool     `mapstructure:"set_packer_passwd"`
 }
 
 type Provisioner struct {
@@ -118,6 +119,10 @@ func (p *Provisioner) Prepare(raws ...interface{}) error {
 		p.config.AnsibleEnvVars = append(p.config.AnsibleEnvVars, "ANSIBLE_SCP_IF_SSH=True")
 	}
 
+	if p.config.SetPackerPasswd {
+		p.config.AnsibleEnvVars = append(p.config.AnsibleEnvVars, "PACKER_RANDOM_PASSWORD=TEST")
+	}
+
 	if len(p.config.LocalPort) > 0 {
 		if _, err := strconv.ParseUint(p.config.LocalPort, 10, 16); err != nil {
 			errs = packer.MultiErrorAppend(errs, fmt.Errorf("local_port: %s must be a valid port", p.config.LocalPort))