[openstack] Config drive option (#457)

* [openstack] Config drive auto-detection

Signed-off-by: Andrey Klimentyev <andrey.klimentyev@flant.com>

* rebase and API re-generation

Author: zuzzas

kubernetes/crds/machine.sapcloud.io_openstackmachineclasses.yaml

@@ -102,6 +102,8 @@ spec:
               additionalProperties:
                 type: string
               type: object
+            useConfigDrive:
+              type: boolean
           required:
           - availabilityZone
           - flavorName

pkg/apis/machine/types.go

@@ -638,6 +638,7 @@ type OpenStackMachineClassSpec struct {
 	SecretRef        *corev1.SecretReference
 	PodNetworkCidr   string
 	RootDiskSize     int // in GB
+	UseConfigDrive   *bool
 }
 
 type OpenStackNetwork struct {

pkg/apis/machine/v1alpha1/openstack_machineclass_types.go

@@ -101,6 +101,7 @@ type OpenStackMachineClassSpec struct {
 	SecretRef        *corev1.SecretReference `json:"secretRef,omitempty"`
 	PodNetworkCidr   string                  `json:"podNetworkCidr"`
 	RootDiskSize     int                     `json:"rootDiskSize,omitempty"` // in GB
+	UseConfigDrive   *bool                   `json:"useConfigDrive,omitempty"`
 }
 
 type OpenStackNetwork struct {

pkg/apis/machine/v1alpha1/zz_generated.conversion.go

@@ -25,10 +25,9 @@ import (
 	"runtime"
 	"strings"
 
-	"github.com/gophercloud/gophercloud/openstack/networking/v2/networks"
-
 	"github.com/gardener/machine-controller-manager/pkg/apis/machine/v1alpha1"
 	"github.com/gardener/machine-controller-manager/pkg/metrics"
+	"github.com/gophercloud/gophercloud/openstack/networking/v2/networks"
 	"github.com/prometheus/client_golang/prometheus"
 	corev1 "k8s.io/api/core/v1"
 	"k8s.io/klog"
@@ -113,6 +112,7 @@ func (d *OpenStackDriver) Create() (string, string, error) {
 	metadata := d.OpenStackMachineClass.Spec.Tags
 	podNetworkCidr := d.OpenStackMachineClass.Spec.PodNetworkCidr
 	rootDiskSize := d.OpenStackMachineClass.Spec.RootDiskSize
+	useConfigDrive := d.OpenStackMachineClass.Spec.UseConfigDrive
 
 	var createOpts servers.CreateOptsBuilder
 	var imageRef string
@@ -170,6 +170,7 @@ func (d *OpenStackDriver) Create() (string, string, error) {
 		Metadata:         metadata,
 		UserData:         []byte(d.UserData),
 		AvailabilityZone: availabilityZone,
+		ConfigDrive:      useConfigDrive,
 	}
 
 	createOpts = &keypairs.CreateOptsExt{