builder/openstack: AZ support

builder/openstack/builder.go

@@ -79,6 +79,7 @@ func (b *Builder) Run(ui packer.Ui, hook packer.Hook, cache packer.Cache) (packe
 			SourceImage:      b.config.SourceImage,
 			SecurityGroups:   b.config.SecurityGroups,
 			Networks:         b.config.Networks,
+			AvailabilityZone: b.config.AvailabilityZone,
 		},
 		&StepWaitForRackConnect{
 			Wait: b.config.RackconnectWait,

builder/openstack/run_config.go

@@ -17,6 +17,7 @@ type RunConfig struct {
 	SSHUsername      string   `mapstructure:"ssh_username"`
 	SSHPort          int      `mapstructure:"ssh_port"`
 	SSHInterface     string   `mapstructure:"ssh_interface"`
+	AvailabilityZone string   `mapstructure:"availability_zone"`
 	RackconnectWait  bool     `mapstructure:"rackconnect_wait"`
 	FloatingIpPool   string   `mapstructure:"floating_ip_pool"`
 	FloatingIp       string   `mapstructure:"floating_ip"`

builder/openstack/step_run_source_server.go

@@ -15,6 +15,7 @@ type StepRunSourceServer struct {
 	SourceImage      string
 	SecurityGroups   []string
 	Networks         []string
+	AvailabilityZone string
 
 	server *servers.Server
 }
@@ -46,6 +47,7 @@ func (s *StepRunSourceServer) Run(state multistep.StateBag) multistep.StepAction
 			FlavorRef:        flavor,
 			SecurityGroups:   s.SecurityGroups,
 			Networks:         networks,
+			AvailabilityZone: s.AvailabilityZone,
 		},
 
 		KeyName: keyName,

website/source/docs/builders/openstack.html.markdown

@@ -50,6 +50,10 @@ each category, the available configuration keys are alphabetized.
 * `api_key` (string) - The API key used to access OpenStack. Some OpenStack
   installations require this.
 
+* `availability_zone` (string) - The availability zone to launch the
+  server in. If this isn't specified, the default enforced by your OpenStack
+  cluster will be used. This may be required for some OpenStack clusters.
+
 * `floating_ip` (string) - A specific floating IP to assign to this instance.
   `use_floating_ip` must also be set to true for this to have an affect.