Cobbler sample compute node definitions have typo in 'mac-addres'

[Mark T. Voelker]

When puppet_openstack_builder is installed, it creates a sample /etc/puppet/data/cobbler/cobbler.yaml file which has a dozen or so sample node definitions in it to show users what a node definition looks like. Most of them are fine--however the compute node definitions have a small typo in them:

https://github.com/CiscoSystems/puppet_openstack_builder/blob/h.0/data/cobbler/cobbler.yaml#L158

Note the missing 's' on 'mac-addres:'. Users who take the stock definitions and fill in their own information might not notice the typo, and as a result wind up with Cobbler system definitions that lack a MAC address and therefore won't PXE boot.

[Mark T. Voelker (mvoelker)]

Pull request with the fix:
https://github.com/CiscoSystems/puppet_openstack_builder/pull/35