The CI team is developing a new tool, git-review:
https://github.com/openstack-ci/git-review
which is intendend to replace rfc.sh. This adds a .gitreview file
so that it can automatically determine the canonical gerrit location
for the repository when first run.
Change-Id: I4d71e9a8b5463e29449a3da2739a15f40970354b