Conver to regular Go vendor + dep tool

vendor/github.com/jlaffaye/ftp/.travis/prepare.sh

@@ -0,0 +1,18 @@
+#!/bin/sh -e
+
+case "$1" in
+  proftpd)
+    mkdir -p /etc/proftpd/conf.d/
+    cp $TRAVIS_BUILD_DIR/.travis/proftpd.conf /etc/proftpd/conf.d/
+    ;;
+  vsftpd)
+    cp $TRAVIS_BUILD_DIR/.travis/vsftpd.conf /etc/vsftpd.conf
+    ;;
+  *)
+    echo "unknown software: $1"
+    exit 1
+esac
+
+mkdir --mode 0777 -p /var/ftp/incoming
+
+apt-get install -qq "$1"

vendor/github.com/jlaffaye/ftp/.travis/proftpd.conf

@@ -0,0 +1,9 @@
+<Anonymous /var/ftp>
+  User        ftp
+  Group       nogroup
+  MaxClients  2
+  # We want clients to be able to login with "anonymous" as well as "ftp"
+  UserAlias   anonymous ftp
+
+  RequireValidShell  off
+</Anonymous>

vendor/github.com/jlaffaye/ftp/.travis/vsftpd.conf

@@ -0,0 +1,15 @@
+# Used by Travis CI
+
+listen=NO
+listen_ipv6=YES
+
+write_enable=YES
+dirmessage_enable=YES
+secure_chroot_dir=/var/run/vsftpd/empty
+
+anonymous_enable=YES
+anon_root=/var/ftp
+anon_upload_enable=YES
+anon_mkdir_write_enable=YES
+anon_other_write_enable=YES
+anon_umask=022