mod+chanfunding: use coin selection strategy for channel funding

The wallet assembler is now aware of the node config level coin
selection strategy, so we can use it when creating new channels.

lnwallet/wallet.go

@@ -20,6 +20,7 @@ import (
 	"github.com/btcsuite/btcd/chaincfg/chainhash"
 	"github.com/btcsuite/btcd/txscript"
 	"github.com/btcsuite/btcd/wire"
+	"github.com/btcsuite/btcwallet/wallet"
 	"github.com/davecgh/go-spew/spew"
 	"github.com/lightningnetwork/lnd/channeldb"
 	"github.com/lightningnetwork/lnd/input"
@@ -2530,7 +2531,7 @@ func NewCoinSource(w *LightningWallet) *CoinSource {
 // ListCoins returns all UTXOs from the source that have between
 // minConfs and maxConfs number of confirmations.
 func (c *CoinSource) ListCoins(minConfs int32,
-	maxConfs int32) ([]chanfunding.Coin, error) {
+	maxConfs int32) ([]wallet.Coin, error) {
 
 	utxos, err := c.wallet.ListUnspentWitnessFromDefaultAccount(
 		minConfs, maxConfs,
@@ -2539,9 +2540,9 @@ func (c *CoinSource) ListCoins(minConfs int32,
 		return nil, err
 	}
 
-	var coins []chanfunding.Coin
+	var coins []wallet.Coin
 	for _, utxo := range utxos {
-		coins = append(coins, chanfunding.Coin{
+		coins = append(coins, wallet.Coin{
 			TxOut: wire.TxOut{
 				Value:    int64(utxo.Value),
 				PkScript: utxo.PkScript,
@@ -2556,13 +2557,13 @@ func (c *CoinSource) ListCoins(minConfs int32,
 // CoinFromOutPoint attempts to locate details pertaining to a coin based on
 // its outpoint. If the coin isn't under the control of the backing CoinSource,
 // then an error should be returned.
-func (c *CoinSource) CoinFromOutPoint(op wire.OutPoint) (*chanfunding.Coin, error) {
+func (c *CoinSource) CoinFromOutPoint(op wire.OutPoint) (*wallet.Coin, error) {
 	inputInfo, err := c.wallet.FetchInputInfo(&op)
 	if err != nil {
 		return nil, err
 	}
 
-	return &chanfunding.Coin{
+	return &wallet.Coin{
 		TxOut: wire.TxOut{
 			Value:    int64(inputInfo.Value),
 			PkScript: inputInfo.PkScript,