OpenStack builder: update floating IP params

Rename "floating_network" to the "floating_ip_network".
Return old "floating_ip_pool" parameter for backward compatibility with
old configuration files. It's value will be passed to the
"floating_ip_network" parameter.

builder/openstack/builder.go

@@ -115,7 +115,7 @@ func (b *Builder) Run(ui packer.Ui, hook packer.Hook, cache packer.Cache) (packe
 			Wait: b.config.RackconnectWait,
 		},
 		&StepAllocateIp{
-			FloatingNetwork: b.config.FloatingNetwork,
+			FloatingIPNetwork: b.config.FloatingIPNetwork,
 			FloatingIP:        b.config.FloatingIP,
 			ReuseIPs:          b.config.ReuseIPs,
 		},

builder/openstack/run_config.go

@@ -23,7 +23,7 @@ type RunConfig struct {
 	Flavor            string            `mapstructure:"flavor"`
 	AvailabilityZone  string            `mapstructure:"availability_zone"`
 	RackconnectWait   bool              `mapstructure:"rackconnect_wait"`
-	FloatingNetwork  string            `mapstructure:"floating_network"`
+	FloatingIPNetwork string            `mapstructure:"floating_ip_network"`
 	FloatingIP        string            `mapstructure:"floating_ip"`
 	ReuseIPs          bool              `mapstructure:"reuse_ips"`
 	SecurityGroups    []string          `mapstructure:"security_groups"`
@@ -36,6 +36,9 @@ type RunConfig struct {
 
 	ConfigDrive bool `mapstructure:"config_drive"`
 
+	// Used for BC, value will be passed to the "floating_ip_network"
+	FloatingIPPool string `mapstructure:"floating_ip_pool"`
+
 	UseBlockStorageVolume  bool   `mapstructure:"use_blockstorage_volume"`
 	VolumeName             string `mapstructure:"volume_name"`
 	VolumeType             string `mapstructure:"volume_type"`
@@ -57,6 +60,10 @@ func (c *RunConfig) Prepare(ctx *interpolate.Context) []error {
 		c.TemporaryKeyPairName = fmt.Sprintf("packer_%s", uuid.TimeOrderedUUID())
 	}
 
+	if c.FloatingIPPool != "" {
+		c.FloatingIPNetwork = c.FloatingIPPool
+	}
+
 	// Validation
 	errs := c.Comm.Prepare(ctx)
 

builder/openstack/run_config_test.go

@@ -101,11 +101,19 @@ func TestRunConfigPrepare_BlockStorage(t *testing.T) {
 	}
 
 	c.VolumeName = "PackerVolume"
-	if err := c.Prepare(nil); len(err) != 0 {
-		t.Fatalf("err: %s", err)
-	}
-
 	if c.VolumeName != "PackerVolume" {
 		t.Fatalf("invalid value: %s", c.VolumeName)
 	}
 }
+
+func TestRunConfigPrepare_FloatingIPPoolCompat(t *testing.T) {
+	c := testRunConfig()
+	c.FloatingIPPool = "uuid"
+	if err := c.Prepare(nil); len(err) != 0 {
+		t.Fatalf("err: %s", err)
+	}
+
+	if c.FloatingIPNetwork != "uuid" {
+		t.Fatalf("invalid value: %s", c.FloatingIPNetwork)
+	}
+}

builder/openstack/step_allocate_ip.go

@@ -11,7 +11,7 @@ import (
 )
 
 type StepAllocateIp struct {
-	FloatingNetwork string
+	FloatingIPNetwork string
 	FloatingIP        string
 	ReuseIPs          bool
 }
@@ -77,7 +77,7 @@ func (s *StepAllocateIp) Run(_ context.Context, state multistep.StateBag) multis
 	if instanceIP.ID == "" {
 		// Search for the external network that can be used for the floating IPs if
 		// user hasn't provided any.
-		floatingNetwork := s.FloatingNetwork
+		floatingNetwork := s.FloatingIPNetwork
 		if floatingNetwork == "" {
 			ui.Say(fmt.Sprintf("Searching for the external network..."))
 			externalNetwork, err := FindExternalNetwork(networkClient)