Add Peter Waller <p@pwaller.net> to AUTHORS

Docker-DCO-1.1-Signed-off-by: Peter Waller <p@pwaller.net> (github: pwaller)

AUTHORS

@@ -231,6 +231,7 @@ Paul Morie <pmorie@gmail.com>
 Paul Nasrat <pnasrat@gmail.com>
 Paul <paul9869@gmail.com>
 Peter Braden <peterbraden@peterbraden.co.uk>
+Peter Waller <p@pwaller.net>
 Phil Spitler <pspitler@gmail.com>
 Pierre-Alain RIVIERE <pariviere@ippon.fr>
 Piotr Bogdan <ppbogdan@gmail.com>