func (f *FakeWriter) AddHosts(ctx context.Context, sourcePod types.NamespacedName, ips []string) (string, error) {
	return "admintools.conf.tmp", nil
}
AddHosts is called to add IPs to an admintools.conf.  New admintools.conf, stored in
a temporarily, is returned by name.  Since this is fake, we just return a
name of a dummy file.  Actual file doesn't exist.
package atconf
import (
	"context"
	"k8s.io/apimachinery/pkg/types"
)
type FakeWriter struct {
}