Cleanup cookiecutter defaults

Some of the defaults applied by cookiecutter are not applicable to this
repository and were not cleaned up before getting committed. This patch:

 - updates the project setting so that 'git review' will work properly.
 - updates the docs conf so docs will build
 - updates the setup.cfg so that it can be installed properly

Change-Id: I47b2324202fe041d49d414f30756627123093dc9
diff --git a/.gitreview b/.gitreview
index 698048f..164aca3 100644
--- a/.gitreview
+++ b/.gitreview
@@ -1,4 +1,4 @@
 [gerrit]
 host=review.openstack.org
 port=29418
-project=openstack/openstack.git
+project=openstack/keystone-tempest-plugin.git