Initial commit based on current tempest

This creates the tempest plugin for horizon and duplicates
the existing horizon scenario test in tempest.

Change-Id: I9430b6cefc884ecc105e91ec19a07987aa70ef98
diff --git a/README.rst b/README.rst
new file mode 100644
index 0000000..7ba5c33
--- /dev/null
+++ b/README.rst
@@ -0,0 +1,7 @@
+===============================
+tempest-horizon
+===============================
+
+Tempest Plugin for Horizon tests
+
+* Free software: Apache license