Remove docs about deprecated pypi-mirror tool

The pypi-mirror tool is no longer supported by the infra team, or
reccomended for installs, and is known to have various bugs that will
not be fixed.

Remove mentions of it from the docs and point people at devpi-server
instead.

Change-Id: Ieedb8bf9bee2f5932edac6b9747e645d0f4eb08c

elements/pypi/README.md

@@ -26,38 +26,27 @@ export PYPI\_MIRROR\_URL=http://site/pypi/Ubuntu-13.10
 export PYPI\_MIRROR\_URL\_1=http://site/pypi/
 export PYPI\_MIRROR\_URL\_2=file:///tmp/pypi
 
-[pypi-mirror](https://git.openstack.org/cgit/openstack-infra/pypi-mirror) can
-be useful in making a partial PyPI mirror suitable for building images. For
+[devpi-server](https://git.openstack.org/cgit/openstack-infra/pypi-mirro://pypi.python.org/pypi/devpi-server)
+can be useful in making a partial PyPI mirror suitable for building images. For
 instance:
 
- * sudo apt-get install  libxml2-dev libxslt-dev libmysqlclient-dev libpq-dev \
-   libnspr4-dev pkg-config libsqlite3-dev libzmq-dev libffi-dev libldap2-dev \
-   libsasl2-dev
+ * pip install -U devpi
 
- * pip install git+https://git.openstack.org/openstack-infra/pypi-mirror
+ * devpi-server quickstart
 
- * cat << EOF > mirror.yaml
-   cache-root: /home/USER/.cache/image-create/pypi/download
+ * devpi use http://machinename:3141
 
-   mirrors:
-    - name: openstack
-      projects:
-        - https://git.openstack.org/openstack/requirements
-      output: /home/USER/.cache/image-create/pypi/mirror
-   EOF
+* Re-export your variables to point at the new mirror:
 
- * mkdir -p /home/USER/.cache/image-create/pypi/{download,mirror}
+    export PYPI\_MIRROR\_URL=http://machinename:3141/
+    unset PYPI\__MIRROR\_URL\_1
+    unset PYPI\__MIRROR\_URL\_1
 
- * run-mirror -b remotes/origin/master --verbose -c mirror.yaml
-   # This creates and updates the mirror.
+The next time packages are installed, they'll be cached on the local devpi
+server; subsequent runs pointed at the same mirror will use the local cache if
+the upstream can't be contacted.
 
-If you have additional packages that are not identified in the global openstack
-requirements project, you can include them:
-
- * pip install -d ~/.cache/image-create/pypi/download/pip/openstack \
-   heat-cfntools distribute os-apply-config
-   run-mirror -b remotes/origin/master --verbose -c mirror.yaml --no-download
-
-A dedicated user with no privileges may be desirable when running this for
-unattended installs, since pypi-mirror will compile fairly arbitrary code from
-the internet.
+Note that this process only has the server running temporarily; see
+[Quickstart: Permanent install on
+server/laptop](http://doc.devpi.net/latest/quickstart-server.html) guide from
+the devpi developers for more information on a more permanent setup.