#9 convert attrib templates

Adds templates
Convert the factor code to Ohai plugin.
A more common way of doing this is:

```ruby
%w( eswitchd/eswitchd.conf neutron/plugins/mlnx/mlnx_conf.ini ).each do |p|
  template "/etc/#{p}" do
    owner node['openstack']['compute']['user']
    group node['openstack']['compute']['group']
    mode 0644
  end
end
```

The `source` lines are unnecessary -- if not specified, `template` looks for the filename with `.erb` added to the end in the templates dir.