Support specifying VPC

This change adds a field to DONetwork specifying the VPC UUID and
updates the controllers to pass the ID into droplet and load balancer
create requests.

Author: timoreimann

api/v1alpha3/types.go

@@ -77,6 +77,10 @@ type DONetwork struct {
 	// Configures an API Server loadbalancers
 	// +optional
 	APIServerLoadbalancers DOLoadBalancer `json:"apiServerLoadbalancers,omitempty"`
+	// VPCUUID defines the VPC UUID to use. An empty value implies using the
+	// default VPC.
+	// +optional
+	VPCUUID string `json:"vpc_uuid,omitempty"`
 }
 
 // DOLoadBalancer define the DigitalOcean loadbalancers configurations.

cloud/scope/cluster.go

@@ -148,3 +148,8 @@ func (s *ClusterScope) APIServerLoadbalancers() *infrav1.DOLoadBalancer {
 func (s *ClusterScope) APIServerLoadbalancersRef() *infrav1.DOResourceReference {
 	return &s.DOCluster.Status.Network.APIServerLoadbalancersRef
 }
+
+// VPCUUID get the DOCluster Spec Network VPCUUID.
+func (s *ClusterScope) VPCUUID() string {
+	return s.DOCluster.Spec.Network.VPCUUID
+}

cloud/services/computes/droplets.go

@@ -92,6 +92,7 @@ func (s *Service) CreateDroplet(scope *scope.MachineScope) (*godo.Droplet, error
 		},
 		UserData:          bootstrapData,
 		PrivateNetworking: true,
+		VPCUUID:           s.scope.VPCUUID(),
 	}
 
 	request.Tags = infrav1.BuildTags(infrav1.BuildTagParams{

cloud/services/networking/loadbalancers.go

@@ -63,7 +63,8 @@ func (s *Service) CreateLoadBalancer(spec *infrav1.DOLoadBalancer) (*godo.LoadBa
 			UnhealthyThreshold:     spec.HealthCheck.UnhealthyThreshold,
 			HealthyThreshold:       spec.HealthCheck.HealthyThreshold,
 		},
-		Tag: infrav1.ClusterNameRoleTag(clusterName, infrav1.APIServerRoleTagValue),
+		Tag:     infrav1.ClusterNameRoleTag(clusterName, infrav1.APIServerRoleTagValue),
+		VPCUUID: s.scope.VPCUUID(),
 	}
 
 	lb, _, err := s.scope.LoadBalancers.Create(s.ctx, request)

config/crd/bases/infrastructure.cluster.x-k8s.io_doclusters.yaml

@@ -256,6 +256,10 @@ spec:
                         minimum: 1
                         type: integer
                     type: object
+                  vpc_uuid:
+                    description: VPCUUID defines the VPC UUID to use. An empty value
+                      implies using the default VPC.
+                    type: string
                 type: object
               region:
                 description: The DigitalOcean Region the cluster lives in. It must