This PR resolves https://github.com/rcbops/ansible-lxc-rpc/issues/79 while
also cleaning up the nova.conf template file as well as the metadata-agent.ini file.
removed unused variables
commented everything and added port / caching as explicite settings
removed whitespace
File clean up
Commeneted everything as sections in the file. Added +metadata_host and +metadata_port.
Nothing else was added or removed however the contents were moved around in the file to
make it more consistent and legible.
c33e5089d6