This commit switch tox env to stestr and fix few tests.
Add the file that tells git-review where the
gerrit instance is.
Change-Id: I717c02e790d5bd22991cc6898e0b3654e083617c
Signed-off-by: Doug Hellmann <doug@doughellmann.com>
Co-author: ghanshyam <gmann@ghanshyammann.com>