Provide a quote estimate for the provided loan close.
/thorchain/quote/loan/close
optional block height, defaults to current tip
the asset used to repay the loan
ETH.ETH
the basis points of the existing position to repay
100
the collateral asset of the loan
BTC.BTC
the owner of the loan collateral
BTC.BTC
the minimum amount of the target asset to accept
1234