Upload OSLO templates for SF to work with Queens

* Adds some templates from oslo/keystoneauth.
* Adds rendering tests.
* Small cleanup after initial commit.

Change-Id: I8a1e37d132e6befd66d03da1809a95359f836365
diff --git a/tests/pillar/queens/oslo/_middleware.sls b/tests/pillar/queens/oslo/_middleware.sls
new file mode 100644
index 0000000..ed08e6d
--- /dev/null
+++ b/tests/pillar/queens/oslo/_middleware.sls
@@ -0,0 +1,3 @@
+_data:
+  max_request_body_size: 123
+  enable_proxy_headers_parsing: true