CORS-2893: capi-aws: implement preserveBootstrapIgnition

This feature is needed for customers running installs under systems with
policies that prevent S3 objects from being deleted.

The way this was implemented in CAPA, the provider will try to delete
the objects but ignore the errors if `BestEffortDeleteObjects` is set in
the `AWSCluster` bucket spec.

Author: r4f4

pkg/asset/manifests/aws/cluster.go

@@ -142,8 +142,9 @@ func GenerateClusterAssets(ic *installconfig.InstallConfig, clusterID *installco
 				},
 			},
 			S3Bucket: &capa.S3Bucket{
-				Name:                 fmt.Sprintf("openshift-bootstrap-data-%s", clusterID.InfraID),
-				PresignedURLDuration: &metav1.Duration{Duration: 1 * time.Hour},
+				Name:                    fmt.Sprintf("openshift-bootstrap-data-%s", clusterID.InfraID),
+				PresignedURLDuration:    &metav1.Duration{Duration: 1 * time.Hour},
+				BestEffortDeleteObjects: ptr.To(ic.Config.AWS.PreserveBootstrapIgnition),
 			},
 			ControlPlaneLoadBalancer: &capa.AWSLoadBalancerSpec{
 				Name:                   ptr.To(clusterID.InfraID + "-int"),