mod: bump to lnd after grpc upgrade and etcd client fix

This commit bumps our compile time dependency to point to the
version of lnd which has bumped its grpc version and updated
its etcd dependency to remove the go modules workaround.

In this commit we also remove the deprecated capacity field in
the hop struct so that our linter will pass. This will be
removed in future versions of lnd, so we pull the bandaid now.

Author: carlaKC

README.md

@@ -26,7 +26,7 @@ The current compatibility matrix reads as follows:
 
 | `lndclient` git tag          | `lnd` version in `go.mod` | minimum required `lnd` version | 
 | ---------------------------- | ------------------------- | ------------------------------ |
-| [`v0.13.0-1`](https://github.com/lightninglabs/lndclient/blob/v0.13.0-1) | `v0.13.0-beta.rc2` | `v0.13.0-beta` |
+| [`v0.13.0-6`](https://github.com/lightninglabs/lndclient/blob/v0.13.0-6) | `lnd @ 44971f0` | `v0.13.0-beta` |
 | [`v0.12.0-7`](https://github.com/lightninglabs/lndclient/blob/v0.12.0-7) | `v0.12.0-beta` | `v0.12.0-beta` |
 | `master` / [`v0.11.1-5`](https://github.com/lightninglabs/lndclient/blob/v0.11.1-5) | `v0.11.1-beta` | `v0.11.1-beta` | 
 

go.mod

@@ -1,18 +1,14 @@
 module github.com/lightninglabs/lndclient
 
 require (
-	github.com/btcsuite/btcd v0.21.0-beta.0.20210429225535-ce697fe7e82b
+	github.com/btcsuite/btcd v0.21.0-beta.0.20210513141527-ee5896bad5be
 	github.com/btcsuite/btclog v0.0.0-20170628155309-84c8d2346e9f
-	github.com/btcsuite/btcutil v1.0.3-0.20201208143702-a53e38424cce
-	github.com/btcsuite/btcwallet/wtxmgr v1.3.0
-	github.com/lightningnetwork/lnd v0.13.0-beta.rc2
+	github.com/btcsuite/btcutil v1.0.3-0.20210527170813-e2ba6805a890
+	github.com/btcsuite/btcwallet/wtxmgr v1.3.1-0.20210706234807-aaf03fee735a
+	github.com/lightningnetwork/lnd v0.13.0-beta.rc5.0.20210802115842-44971f0c46c9
 	github.com/stretchr/testify v1.7.0
-	google.golang.org/grpc v1.29.1
+	google.golang.org/grpc v1.38.0
 	gopkg.in/macaroon.v2 v2.1.0
 )
 
-// Fix incompatibility of etcd go.mod package.
-// See https://github.com/etcd-io/etcd/issues/11154
-replace go.etcd.io/etcd => go.etcd.io/etcd v0.5.0-alpha.5.0.20201125193152-8a03d2e9614b
-
 go 1.15