Migrate Tempest tests into Ironic tree

By using Tempest External Plugin, Tempest tests no longer
need to live in Tempest tree.
This patch set migrates Tempest tests from Tempest tree to Ironic.

Change-Id: Ic52806987dae9f9df561ebd662f12c3445d0e2af
diff --git a/ironic_tempest_plugin/README.rst b/ironic_tempest_plugin/README.rst
new file mode 100644
index 0000000..a7fcc92
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+++ b/ironic_tempest_plugin/README.rst
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+=====================
+Ironic tempest plugin
+=====================
+
+This directory contains Tempest tests to cover the Ironic project,
+as well as a plugin to automatically load these tests into tempest.
+
+See the tempest plugin docs for information on using it:
+http://docs.openstack.org/developer/tempest/plugin.html#using-plugins
+
+To run all tests from this plugin, install ironic into your environment
+and run::
+
+    $ tox -e all-plugin -- ironic
+
+To run a single test case, run with the test case name, for example::
+
+    $ tox -e all-plugin -- ironic_tempest_plugin.tests.scenario.test_baremetal_basic_ops.BaremetalBasicOps.test_baremetal_server_ops
+
+To run all tempest tests including this plugin, run::
+
+    $ tox -e all-plugin