Get werkzeug from fedorapeople rather than koji

The build in koji was a scratch-build and there it will disapear at
a point. So we moved the RPM as well as source RPM to fedorapeople
where it be more stable.

Signed-off-by: Pierre-Yves Chibon <pingou@pingoured.fr>

dev/containers/centos7-rpms-py2

@@ -22,7 +22,7 @@ RUN yum -y install \
     repoSpanner \
     repoSpanner-bridge
 
-RUN yum install -y https://kojipkgs.fedoraproject.org//work/tasks/5657/32535657/python-werkzeug-0.9.6-1.el7.noarch.rpm
+RUN yum install -y https://pingou.fedorapeople.org/RPMs/python-werkzeug-0.9.6-1.el7.noarch.rpm
 
 RUN cd / \
     && git clone https://pagure.io/pagure.git \