add python-yaml to release.debian.org

Dear admins,

Please add the attached patch to add the python-yaml dep to
release.debian.org. It is already installed on the system, as ftpmaster
depends on it.

cheers,

Ivo

>From 87645702a4233a023e4476e48b6d8a05c28be9dd Mon Sep 17 00:00:00 2001
From: Ivo De Decker <ivo.dedecker@ugent.be>
Date: Wed, 11 Dec 2013 22:09:41 +0100
Subject: [PATCH] add python-yaml to release.debian.org

Signed-off-by: Martin Zobel-Helas <zobel@debian.org>