Add install options for graphite-web package
Add install options for graphite-web package

By default, the graphite-web package installs in a location that
pip doesn't recognize. Adding install options seems to fix this
issue.
See https://github.com/graphite-project/graphite-web/issues/1228

puppetlabs/pltraining-learning,kjhenner/pltraining-learning,puppetlabs/pltraining-learning,kjhenner/pltraining-learning