Apply cookiecutter to newly split project

This tempest plugin is being split out of the main manila project in
accordance with Queens goal "Split Tempest Plugins into Separate
Repos/Projects"[1]. This patch applies the standard boilerplate files
for OpenStack projects so that it can stand on its own.

[1] https://governance.openstack.org/tc/goals/queens/split-tempest-plugins.html
diff --git a/.stestr.conf b/.stestr.conf
new file mode 100644
index 0000000..0d36314
--- /dev/null
+++ b/.stestr.conf
@@ -0,0 +1,3 @@
+[DEFAULT]
+test_path=./manila_tempest_tests/tests
+top_dir=./