Run both controllers in a single goroutine with a single manager
Run both controllers in a single goroutine with a single manager

Signed-off-by: Richard Wall <c2866c0eefadc742fd429365a658dfba4f801ca3@jetstack.io>

jetstack/cert-manager,jetstack-experimental/cert-manager,cert-manager/cert-manager,cert-manager/cert-manager,jetstack/cert-manager,jetstack-experimental/cert-manager,cert-manager/cert-manager,jetstack-experimental/cert-manager,jetstack/cert-manager