added support for gophercloud's PopulateApi

builder/openstack/builder.go

@@ -60,13 +60,15 @@ func (b *Builder) Run(ui packer.Ui, hook packer.Hook, cache packer.Cache) (packe
 	if err != nil {
 		return nil, err
 	}
-	api := &gophercloud.ApiCriteria{
-		Name:      "cloudServersOpenStack",
-		Region:    b.config.AccessConfig.Region(),
-		VersionId: "2",
-		UrlChoice: gophercloud.PublicURL,
+	//fetches the api requisites from gophercloud for the appropriate
+	//openstack variant
+	api, err := gophercloud.PopulateApi(b.config.RunConfig.OpenstackProvider)
+	if err != nil {
+		return nil, err
 	}
-	csp, err := gophercloud.ServersApi(auth, *api)
+	api.Region = b.config.AccessConfig.Region()
+
+	csp, err := gophercloud.ServersApi(auth, api)
 	if err != nil {
 		log.Printf("Region: %s", b.config.AccessConfig.Region())
 		return nil, err

builder/openstack/run_config.go

@@ -10,11 +10,12 @@ import (
 // RunConfig contains configuration for running an instance from a source
 // image and details on how to access that launched image.
 type RunConfig struct {
-	SourceImage   string `mapstructure:"source_image"`
-	Flavor        string `mapstructure:"flavor"`
-	RawSSHTimeout string `mapstructure:"ssh_timeout"`
-	SSHUsername   string `mapstructure:"ssh_username"`
-	SSHPort       int    `mapstructure:"ssh_port"`
+	SourceImage       string `mapstructure:"source_image"`
+	Flavor            string `mapstructure:"flavor"`
+	RawSSHTimeout     string `mapstructure:"ssh_timeout"`
+	SSHUsername       string `mapstructure:"ssh_username"`
+	SSHPort           int    `mapstructure:"ssh_port"`
+	OpenstackProvider string `mapstructure:"openstack_provider"`
 
 	// Unexported fields that are calculated from others
 	sshTimeout time.Duration