fee: Round up fee calculation to avoid a lower than expected feerate#22949

Merged

meshcollider merged 3 commits intobitcoin:masterfrom achow101:feerate-round

Nov 4, 2021

+57-12

Commits on Oct 8, 2021

Commits on Oct 11, 2021

tests: Calculate fees more similarly to CFeeRate::GetFee
achow101
committed