ftp: hard fork github.com/jlaffaye/ftp to fix go get

Having a replace directive in go.mod causes "go get
github.com/rclone/rclone" to fail as it discussed in this Go issue:
golang/go#44840

This is apparently how the Go team want go.mod to work, so this commit
hard forks github.com/jlaffaye/ftp into github.com/rclone/ftp so we
can remove the `replace` directive from the go.mod file.

Fixes #5810

backend/ftp/ftp.go

@@ -15,7 +15,7 @@ import (
 	"sync"
 	"time"
 
-	"github.com/jlaffaye/ftp"
+	"github.com/rclone/ftp"
 	"github.com/rclone/rclone/fs"
 	"github.com/rclone/rclone/fs/accounting"
 	"github.com/rclone/rclone/fs/config"

go.mod

@@ -2,8 +2,6 @@ module github.com/rclone/rclone
 
 go 1.17
 
-replace github.com/jlaffaye/ftp => github.com/rclone/ftp v1.0.0-210902f
-
 require (
 	bazil.org/fuse v0.0.0-20200524192727-fb710f7dfd05
 	github.com/Azure/azure-pipeline-go v0.2.3
@@ -32,7 +30,6 @@ require (
 	github.com/hanwen/go-fuse/v2 v2.1.0
 	github.com/iguanesolutions/go-systemd/v5 v5.1.0
 	github.com/jcmturner/gokrb5/v8 v8.4.2
-	github.com/jlaffaye/ftp v0.0.0-20211029032751-b1140299f4df
 	github.com/jzelinskie/whirlpool v0.0.0-20201016144138-0675e54bb004
 	github.com/klauspost/compress v1.13.6
 	github.com/koofr/go-httpclient v0.0.0-20200420163713-93aa7c75b348
@@ -111,6 +108,7 @@ require (
 	github.com/prometheus/client_model v0.2.0 // indirect
 	github.com/prometheus/common v0.32.1 // indirect
 	github.com/prometheus/procfs v0.7.3 // indirect
+	github.com/rclone/ftp v1.0.0-210902h // indirect
 	github.com/rivo/uniseg v0.2.0 // indirect
 	github.com/russross/blackfriday/v2 v2.1.0 // indirect
 	github.com/spacemonkeygo/monkit/v3 v3.0.17 // indirect

go.sum

@@ -543,6 +543,8 @@ github.com/putdotio/go-putio/putio v0.0.0-20200123120452-16d982cac2b8 h1:Y258uzX
 github.com/putdotio/go-putio/putio v0.0.0-20200123120452-16d982cac2b8/go.mod h1:bSJjRokAHHOhA+XFxplld8w2R/dXLH7Z3BZ532vhFwU=
 github.com/rclone/ftp v1.0.0-210902f h1:cm4OxC1S8JARRdEw+CYAyLxg4H+l84STHAdfmK7op2Q=
 github.com/rclone/ftp v1.0.0-210902f/go.mod h1:2lmrmq866uF2tnje75wQHzmPXhmSWUt7Gyx2vgK1RCU=
+github.com/rclone/ftp v1.0.0-210902h h1:e9rbDiTdorXRsRtUOdbr6asesJkYZQ9efy1ts5OEBb8=
+github.com/rclone/ftp v1.0.0-210902h/go.mod h1:GtHgnfXJAx17bmdVU8kiItiUNFkMbFt+sIg0SwAfyx0=
 github.com/rfjakob/eme v1.1.2 h1:SxziR8msSOElPayZNFfQw4Tjx/Sbaeeh3eRvrHVMUs4=
 github.com/rfjakob/eme v1.1.2/go.mod h1:cVvpasglm/G3ngEfcfT/Wt0GwhkuO32pf/poW6Nyk1k=
 github.com/rivo/uniseg v0.2.0 h1:S1pD9weZBuJdFmowNwbpi7BJ8TNftyUImj/0WQi72jY=