Function narwhal_test_utils::make_certificates_with_epoch

pub fn make_certificates_with_epoch(
    committee: &Committee,
    range: RangeInclusive<Round>,
    epoch: Epoch,
    initial_parents: &BTreeSet<CertificateDigest>,
    keys: &[PublicKey]
) -> (VecDeque<Certificate>, BTreeSet<CertificateDigest>)