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/MANIFEST.in b/MANIFEST.in
new file mode 100644
index 0000000..c978a52
--- /dev/null
+++ b/MANIFEST.in
@@ -0,0 +1,6 @@
+include AUTHORS
+include ChangeLog
+exclude .gitignore
+exclude .gitreview
+
+global-exclude *.pyc