Use pip install instead of setup.py install
Use pip install instead of setup.py install

The pip vs. easy_install interactions continually get the systems
into a weird state. pip install $path_to_repo, on the other hand,
works like a charm.

Left out two graphite installs because they are doing path manipulation
and I want to do further testing before touching that.

Change-Id: I373b29aca03f1ebd20e533ebaaf5de9ef2db017e

open-switch/infra_puppet-jenkins,open-switch/infra_puppet-jenkins