Add sudo for redir

lib/vagrant-lxc/action/clear_forwarded_ports.rb

@@ -15,7 +15,7 @@ module Vagrant
             redir_pids.each do |pid|
               next unless is_redir_pid?(pid)
               @logger.debug "Killing pid #{pid}"
-              system "pkill -TERM -P #{pid}"
+              system "sudo pkill -TERM -P #{pid}"
             end
 
             @logger.info "Removing redir pids files"

lib/vagrant-lxc/action/forward_ports.rb

@@ -79,7 +79,7 @@ module Vagrant
           params = %W( --lport=#{host_port} --caddr=#{guest_ip} --cport=#{guest_port} )
           params.unshift "--laddr=#{host_ip}" if host_ip
           params << '--syslog' if ENV['REDIR_LOG']
-          redir_cmd = "redir #{params.join(' ')} 2>/dev/null"
+          redir_cmd = "sudo redir #{params.join(' ')} 2>/dev/null"
 
           @logger.debug "Forwarding port with `#{redir_cmd}`"
           spawn redir_cmd