Stop using pre-compiled wheels

We actually want to ensure users are able to use our roles outside of
openstack-infra. Since those users won't have wheel mirrors, disable
our jobs from using them too.

Change-Id: I219f8980c5e0ee18cfa80b64ae179156cff7ee2b
Signed-off-by: Paul Belanger <pabelanger@redhat.com>

.zuul.yaml

@@ -1,6 +1,7 @@
 - job:
     name: ansible-role-zuul-base
     parent: unittests
+    pre-run: tests/playbooks/pre.yaml
     run: tests/playbooks/run.yaml
     post-run: tests/collect-logs.yaml
     roles:

tests/playbooks/pre.yaml

@@ -0,0 +1,22 @@
+# Copyright 2018 Red Hat, Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+---
+- hosts: all
+  tasks:
+    - name: Disable extra wheels mirror
+      become: yes
+      lineinfile:
+        dest: /etc/pip.conf
+        regexp: ^extra-index-url
+        state: absent