Function zebra_state::service::read::difficulty::adjust_difficulty_and_time_for_testnet

fn adjust_difficulty_and_time_for_testnet(
    result: &mut GetBlockTemplateChainInfo,
    network: &Network,
    previous_block_height: Height,
    relevant_data: Vec<(CompactDifficulty, DateTime<Utc>)>,
)

Adjust the difficulty and time for the testnet minimum difficulty rule.

The relevant_data has recent block difficulties and times in reverse order from the tip.