Add jeepyb & cgit repo creation script to git.o.o

Includes the jeepyb and required pip modules to the new
git.openstack.org server.

Also installs and sets up the create_cgitrepos.py script for
creating the /etc/cgitrepos configuration file

Change-Id: I06606ca73541dd328f413bfdbd2810fe66ca633b
Merge "Add jeepyb & cgit repo creation script to git.o.o"