multi: new bitcoind rpcpolling backend for itests

lntest/bitcoind_rpcpolling.go

@@ -0,0 +1,23 @@
+//go:build bitcoind && rpcpolling
+// +build bitcoind,rpcpolling
+
+package lntest
+
+import (
+	"github.com/btcsuite/btcd/chaincfg"
+)
+
+// NewBackend starts a bitcoind node without the txindex enabled and returns a
+// BitoindBackendConfig for that node.
+func NewBackend(miner string, netParams *chaincfg.Params) (
+	*BitcoindBackendConfig, func() error, error) {
+
+	extraArgs := []string{
+		"-debug",
+		"-regtest",
+		"-txindex",
+		"-disablewallet",
+	}
+
+	return newBackend(miner, netParams, extraArgs, true)
+}