Adds Kilo template back into toctree

We have previously published the kilo template here:
http://specs.openstack.org/openstack/nova-specs/specs/kilo-template.html
and have since updated it. But because we removed it from the toctree
it is not being updated on the website.

This change adds just the kilo template back into the toctree.

Change-Id: I8bdaef79439bf2f49a979c16de22c7aa6d7e2fcb
Merge "Adds Kilo template back into toctree"