Add Docs for plugin

Change-Id: I0064553874e621da17fcc742868b4373c233bb7b
diff --git a/test-requirements.txt b/test-requirements.txt
index 57b0999..bc04e2a 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -4,3 +4,5 @@
 
 # Hacking already pins down pep8, pyflakes and flake8
 hacking<0.10,>=0.9.2
+openstackdocstheme>=1.5.0  # Apache-2.0
+sphinx>=1.5.1 # BSD
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