Create new pypi-mirror project for run_mirror.py

In preparation to split the run_mirror.py script into
a different project from jeepyb, we need to create the
new home for the run_mirror.py script.

Change-Id: I1dd467afe8ef6a153d8a5f0fc95707c864861f9c
Merge "Create new pypi-mirror project for run_mirror.py"