provision/provision.go
func Registry() ([]Provisioner, error) {
	registry := make([]Provisioner, 0, len(provisioners))
	for _, pFunc := range provisioners {
		p, err := pFunc()
		if err != nil {
			return nil, err
		}
		registry = append(registry, p)
	}
	return registry, nil
}
func Registry() ([]Provisioner, error) {
	registry := make([]Provisioner, 0, len(provisioners))
	for _, pFunc := range provisioners {
		p, err := pFunc()
		if err != nil {
			return nil, err
		}
		registry = append(registry, p)
	}
	return registry, nil
}
// Registry returns the list of registered provisioners.