Stop installing pydistutils.cfg

We install pydistutils.cfg to catch legacy cases where people
are doing things with easy_install. That code path is not
desirable and increasingly broken, as support for things like
allow-hosts is dropped upstream.

Stop installing the file. This will mean people using easy_install
won't get the benefit of the mirrors, but they shouldn't be
using easy_install anyway.

Remove pydistutils.cfg if it's there

Make sure we don't have any pydistutils.cfg around.

Change-Id: I24a05f456f87bd4cb57ebf89d4245477bf675f97

roles/configure-mirrors/tasks/mirror.yaml

@@ -1,8 +1,7 @@
-- name: Install .pydistutils.cfg configuration in homedir
-  template:
-    dest: ~/.pydistutils.cfg
-    mode: 0644
-    src: .pydistutils.cfg.j2
+- name: Remove .pydistutils.cfg configuration in homedir
+  file:
+    path: ~/.pydistutils.cfg
+    state: absent
 
 - name: Include OS-specific variables
   include_vars: "{{ item }}"

roles/configure-mirrors/templates/.pydistutils.cfg.j2

@@ -1,4 +0,0 @@
-# {{ ansible_managed }}
-[easy_install]
-index_url = {{ pypi_mirror }}
-allow_hosts = {{ mirror_fqdn }}