This will be dynamic

To replace the removed constant,
getAuctionBasePercentage
calculates the current base auction percentage
such that given sorrect collateralization
the base will be 100% of the backing value

eg: collateralization:
500 collateral percent-> 20% base auction duration
150 collateral percent -> 66% base auction duration
100 collateral percent -> 100%
base auction duration

Note: This breaks when we go under 100% collateralization

Using current system initialCollateralizedPercent
does not correctly reflect the individual Deposit's
initialCollateralizedPercent.

Track initialCollateralizedPercent for each
individual Deposit