fix communicator

builder/oracle/classic/config.go

@@ -7,6 +7,7 @@ import (
 	"github.com/hashicorp/packer/common"
 	"github.com/hashicorp/packer/helper/communicator"
 	"github.com/hashicorp/packer/helper/config"
+	"github.com/hashicorp/packer/packer"
 	"github.com/hashicorp/packer/template/interpolate"
 )
 
@@ -48,5 +49,10 @@ func NewConfig(raws ...interface{}) (*Config, error) {
 		return nil, fmt.Errorf("Error parsing API Endpoint: %s", err)
 	}
 
+	var errs *packer.MultiError
+	if es := c.Comm.Prepare(&c.ctx); len(es) > 0 {
+		errs = packer.MultiErrorAppend(errs, es...)
+	}
+
 	return c, nil
 }

builder/oracle/classic/step_create_instance.go

@@ -20,7 +20,7 @@ func (s *stepCreateInstance) Run(state multistep.StateBag) multistep.StepAction
 	sshPublicKey := strings.TrimSpace(state.Get("publicKey").(string))
 
 	// Load the dynamically-generated SSH key into the Oracle Compute cloud.
-	sshKeyName := fmt.Sprintf("/Compute-%s/%s/packer_dynamic_key", config.IdentityDomain, config.Username)
+	sshKeyName := fmt.Sprintf("/Compute-%s/%s/packer_generated_key", config.IdentityDomain, config.Username)
 
 	sshKeysClient := client.SSHKeys()
 	sshKeysInput := compute.CreateSSHKeyInput{
@@ -31,7 +31,7 @@ func (s *stepCreateInstance) Run(state multistep.StateBag) multistep.StepAction
 	keyInfo, err := sshKeysClient.CreateSSHKey(&sshKeysInput)
 	if err != nil {
 		// Key already exists; update key instead
-		if strings.Contains(err.Error(), "packer_dynamic_key already exists") {
+		if strings.Contains(err.Error(), "packer_generated_key already exists") {
 			updateKeysInput := compute.UpdateSSHKeyInput{
 				Name:    sshKeyName,
 				Key:     sshPublicKey,