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/HACKING.rst b/HACKING.rst
new file mode 100644
index 0000000..3a692ff
--- /dev/null
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+tempest-horizon Style Commandments
+===============================================
+
+Read the OpenStack Style Commandments http://docs.openstack.org/developer/hacking/