Add rally-jobs folder to get rally support

This patch set adds rally-jobs folder with watcher.yaml scenario
to get rally support for Watcher project

Change-Id: Icb8eace045d86a9b78b543a8a49fe747f4b00772

rally-jobs/README.rst

@@ -0,0 +1,42 @@
+Rally job
+=========
+
+We provide, with Watcher, a Rally plugin you can use to benchmark the optimization service.
+
+To launch this task with configured Rally you just need to run:
+
+::
+
+  rally task start watcher/rally-jobs/watcher.yaml
+
+Structure
+---------
+
+* plugins - directory where you can add rally plugins. Almost everything in
+  Rally is a plugin. Benchmark context, Benchmark scenario, SLA checks, Generic
+  cleanup resources, ....
+
+* extra - all files from this directory will be copy pasted to gates, so you
+  are able to use absolute paths in rally tasks.
+  Files will be located in ~/.rally/extra/*
+
+* watcher.yaml is a task that is run in gates against OpenStack
+  deployed by DevStack
+
+
+Useful links
+------------
+
+* How to install: http://docs.openstack.org/developer/rally/install.html
+
+* How to set Rally up and launch your first scenario:  https://rally.readthedocs.io/en/latest/tutorial/step_1_setting_up_env_and_running_benchmark_from_samples.html
+
+* More about Rally: https://rally.readthedocs.org/en/latest/
+
+* Rally release notes: https://rally.readthedocs.org/en/latest/release_notes.html
+
+* How to add rally-gates: https://rally.readthedocs.org/en/latest/gates.html
+
+* About plugins:  https://rally.readthedocs.org/en/latest/plugins.html
+
+* Plugin samples: https://github.com/openstack/rally/tree/master/samples/plugins