Initial setup of the octavia-tempest-plugin repo

This patch is the initial repository setup for octavia-tempest-plugin
using the OpenStack cookiecutter template.

Change-Id: Icce1389d3a9fb6076091d4d291e15773fb64544b
diff --git a/doc/source/contributing.rst b/doc/source/contributing.rst
new file mode 100644
index 0000000..1728a61
--- /dev/null
+++ b/doc/source/contributing.rst
@@ -0,0 +1,4 @@
+============
+Contributing
+============
+.. include:: ../../CONTRIBUTING.rst