rbtcollins/tripleo-end-to-end — pull request #2 by jamezpolley (2014-08-20 06:26:53+00:00)
Title: Add --clean to reset all repos to upstream master

prep_source_repos already does a great job of applying a series of
patches - but sometimes you just want to temporarily set all the repos
back to their upstream state just to check how that's working today.

This change adds a --clean option which resets all the repos back to
upstream master state.